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Changed lines 15-16 from:
[[http://www.national.com/ds.cgi/LM/LM341.pdf |Link to 7805 datasheet]]
to:
[[http://www.ti.com/product/LM7805C |Link to 7805 datasheet]]
Changed line 57 from:
Switches are one form of digital input.  There are many kinds of switches. The two most useful caategories are '''momentary switches''', which remain closed only when you press them, and '''toggle switches''', which stay in place after you switch them.
to:
Switches are one form of digital input.  There are many kinds of switches. The two most useful categories are '''momentary switches''', which remain closed only when you press them, and '''toggle switches''', which stay in place after you switch them.
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Gears can be used to change the speed and torque of motors.

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A servo motor is paired with an encoder (e.g. an Arduino) to provide position/speed readings and control messages in a feedback loop.  This loop is used to precisely control of the servo's degree of rotation.
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DC motors utilize induction (an electromagnetic field generated by current flowing through a wire coil) to rotate a central shaft.  You can reverse the direction that the shaft rotates by reversing the leads powering it.
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Screw terminals are electrical connectors that hold wires in place with a clamping screw.  They allow for a more secure connection than female headers and more flexibility than soldering a wire in place.

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An H bridge is an electronic circuit that enables a voltage to be applied across a load in either direction.  They are often used to control the direction or a DC motors.

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!!Reed Relay
%lframe width=100px valign=center% [[Attach:relay.jpg | Attach:relay.jpg"reed relay"]] | [-reed relay-]
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!!Electromechanical Relay
%lframe width=100px valign=center% [[Attach:relay.jpg | Attach:relay.jpg"reed relay"]] | [-electromechanical relay-]
Like transistors, relays are electronic switches.  Electromechanical relays contain a small coil that, when energized, creates a magnetic field that moves a small metal armature to open or close an electrical contact.  Relays can handle higher current than transistors and can be used for AC or DC loads.  However, because they rely on a physical mechanism, they are slower and more prone wearing out.  If you want to control a relay with the Arduino, you will need to use a transistor as an intermediary because most relays draw more current than the Arduino's output pins can supply,

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The number on a ceramic cap gives you its value and order of magnitude.  For example, 104 indicates a 0.1 microfarad (uF) cap.  103 indicates a 0.001 microfarad cap. 
to:
The number on a ceramic cap gives you its value and order of magnitude.  For example, 104 indicates a 0.1 microfarad (uF) cap.  103 indicates a 0.01 microfarad cap. 
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!!Motors
!!!Servo Motor
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!!!DC Motor
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!!!Gear Kit
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!!H-Bridge
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!!Reed Relay
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!!Screw Terminal
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!!Power Jacks
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!!Battery Holders
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'''Voltage Regulator'''
to:
(:*toc Table of Contents:)

!!Voltage
Regulator
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'''LED'''
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!!LED
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'''Resistors'''
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!!Resistors
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'''Potentiometers'''
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!!Potentiometers
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'''Switches'''
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!!Switches
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'''Photocells'''
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!!Photocells
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'''Thermistors'''
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!!Thermistors
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'''Capacitors'''
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!!Capacitors
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'''Diodes'''
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!!Diodes
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'''Transistors'''
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!!Transistors
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[[<<]]
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[[<<]]
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'''Diodes'''
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Diodes permit voltage to flow in one direction and block it in the other direction.  LEDs are a type of diode, as are the 1N4001 diodes shown here.  They're useful for stopping voltage from going somewhere you don't want it to go.
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'''Zener diodes''' have a breakdown voltage past which they allow current to flow in both directions. They're used to chop off excess voltage from a part of a circuit.
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'''Transistors'''
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Transistors act as electronic switches. When you put a small voltage across the base and emitter, the transistor allows a larger current and voltage to flow from the collector to the emitter.
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The number on a ceramic cap gives you its value and order of magnitude.  For example, 104 indicates a 0.1 microfarad (uF) cap.  103 indicates a 0.001 microfarad cap. 
Added line 78:
Electrolytic capacitors can generally store more charge than ceramic caps, and are longer lasting and more expensive.  They're usually polarized, meaning that they have a positive leg and a negative leg.  This is because current flows more efficiently through them one way than the other. 
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An electrolytic cap will have a + or - on one side, as shown here.
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%lframe width=100px valign=center% [[Attach:caps_ceramic.jpg | Attach:caps_ceramic.jpg"ceramic capacitors"]] | [-ceramic capacitors-]
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%lframe width=100px valign=center% [[Attach:caps_ceramic.jpg | Attach:caps_ceramic.jpg"ceramic capacitors"]] | [-ceramic capacitors-]
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[[<<]]
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'''Photocells'''
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Photocells are variable resistors whose resistance changes as the light hitting them changes.
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'''Thermistors'''
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Thermistors are variable resistors whose resistance changes as the temperature changes.
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'''Capacitors'''

Capacitors store electrical energy while there's energy coming in, and release it when the incoming energy stops.  They have a variety of uses. One common use is to smooth out the dips and spikes in an electrical supply.  This use is called '''decoupling'''.

'''Ceramic capacitors''' are cheap and unpolarized.  They generally have very small capaacitance values.  They're useful decoupling caps in a low-current circuit. You often see them used to decouple the power going into a microcontroller or other integrated circuit.

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'''Resistors'''
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'''Resistors''' resist the flow of electrical current.  When placed in series, they reduce the voltage, and limit the current.  The bands on a resistor indicate the resistor's value.  Here's a handy [[http://www.dannyg.com/examples/res2/resistor.htm|resistor color code calculator]].
to:
Resistors resist the flow of electrical current.  When placed in series, they reduce the voltage, and limit the current.  The bands on a resistor indicate the resistor's value.  Here's a handy [[http://www.dannyg.com/examples/res2/resistor.htm|resistor color code calculator]].
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'''Potentiometers'''
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'''Switches'''
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'''Switches''' are one form of digital input.  There are many kinds of switches. The two most useful caategories are '''momentary switches''', which remain closed only when you press them, and '''toggle switches''', which stay in place after you switch them.
to:
Switches are one form of digital input.  There are many kinds of switches. The two most useful caategories are '''momentary switches''', which remain closed only when you press them, and '''toggle switches''', which stay in place after you switch them.
Added lines 34-35:

'''Resistors''' resist the flow of electrical current.  When placed in series, they reduce the voltage, and limit the current.  The bands on a resistor indicate the resistor's value.  Here's a handy [[http://www.dannyg.com/examples/res2/resistor.htm|resistor color code calculator]].
Deleted lines 36-37:
%lframe width=100px valign=center% [[Attach:leds.jpg | Attach:leds.jpg"LEDs"]] | [-LEDs-]
[[<<]]
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Potentiometers are variable resistors.  The two outside terminals act as a fixed resistor.  A movable contact called the wiper moves across the resistor, producing a variable resistance between the center terminal and either of the two sides.

Added lines 43-44:

'''Trimmer potentiometers''' are designed to be mounted on a circuit board, difficult to turn, so you can use them to adjust a circuit. They're handy to use as physical variables, to tune your project.
Added lines 47-49:

'''Switches''' are one form of digital input.  There are many kinds of switches. The two most useful caategories are '''momentary switches''', which remain closed only when you press them, and '''toggle switches''', which stay in place after you switch them.
%lframe width=100px valign=center% [[Attach:switches_toggle.jpg | Attach:switches_toggle.jpg"toggle switches"]] | [-toggle switches-]
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%lframe width=100px valign=center% [[Attach:switches_toggle.jpg | Attach:switches_toggle.jpg"toggle switches"]] | [-toggle switches-]
[[<<]]
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%lframe width=100px valign=center% [[Attach:relay.jpg | Attach:relay.jpg  "reed relay"]] | [-reed relay-]
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%lframe width=100px valign=center% [[Attach:relay.jpg | Attach:relay.jpg"reed relay"]] | [-reed relay-]
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%lframe width=100px valign=center% [[Attach:resistors.jpg | Attach:resistors.jpg "resistors"]] | [-resistors-]
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%lframe width=100px valign=center% [[Attach:resistors.jpg | Attach:resistors.jpg"resistors"]] | [-resistors-]
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%lframe width=100px valign=center% [[Attach:leds.jpg | Attach:leds.jpg "LEDs"]] | [-LEDs-]
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%lframe width=100px valign=center% [[Attach:leds.jpg | Attach:leds.jpg"LEDs"]] | [-LEDs-]
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%lframe width=100px valign=center% [[Attach:potentiometer.jpg | Attach:potentiometer.jpg "potentiometer"]] | [-potentiometer-]
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%lframe width=100px valign=center% [[Attach:potentiometer.jpg | Attach:potentiometer.jpg"potentiometer"]] | [-potentiometer-]
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%lframe width=100px valign=center% [[Attach:pots_trimmer.jpg | Attach:pots_trimmer.jpg "trimmer potentiometers"]] | [-trimmer potentiometers-]
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%lframe width=100px valign=center% [[Attach:pots_trimmer.jpg | Attach:pots_trimmer.jpg"trimmer potentiometers"]] | [-trimmer potentiometers-]
Changed line 41 from:
%lframe width=100px valign=center% [[Attach:switches_momentary.jpg | Attach:switches_momentary.jpg "momentary switches"]] | [-momentary switches-]
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%lframe width=100px valign=center% [[Attach:switches_momentary.jpg | Attach:switches_momentary.jpg"momentary switches"]] | [-momentary switches-]
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%lframe width=100px valign=center% [[Attach:switches_toggle.jpg | Attach:switches_toggle.jpg "toggle switches"]] | [-toggle switches-]
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%lframe width=100px valign=center% [[Attach:switches_toggle.jpg | Attach:switches_toggle.jpg"toggle switches"]] | [-toggle switches-]
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%lframe width=100px valign=center% [[Attach:photocell.jpg | Attach:photocell.jpg "photocell"]] | [-photocell-]
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%lframe width=100px valign=center% [[Attach:photocell.jpg | Attach:photocell.jpg"photocell"]] | [-photocell-]
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%lframe width=100px valign=center% [[Attach:thermistor.jpg | Attach:thermistor.jpg "thermistor"]] | [-thermistor-]
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%lframe width=100px valign=center% [[Attach:thermistor.jpg | Attach:thermistor.jpg"thermistor"]] | [-thermistor-]
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%lframe width=100px valign=center% [[Attach:caps_ceramic.jpg | Attach:caps_ceramic.jpg "ceramic capacitors"]] | [-ceramic capacitors-]
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%lframe width=100px valign=center% [[Attach:caps_ceramic.jpg | Attach:caps_ceramic.jpg"ceramic capacitors"]] | [-ceramic capacitors-]
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%lframe width=100px valign=center% [[Attach:caps_electrolytic.jpg | Attach:caps_electrolytic.jpg "electrolytic capacitors"]] | [-electrolytic capacitors-]
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%lframe width=100px valign=center% [[Attach:caps_electrolytic.jpg | Attach:caps_electrolytic.jpg"electrolytic capacitors"]] | [-electrolytic capacitors-]
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%lframe width=100px valign=center% [[Attach:cap_electrolytic_detail.jpg | Attach:cap_electrolytic_detail.jpg "electrolytic capacitor detail"]] | [-electrolytic capacitor detail-]
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%lframe width=100px valign=center% [[Attach:cap_electrolytic_detail.jpg | Attach:cap_electrolytic_detail.jpg"electrolytic capacitor detail"]] | [-electrolytic capacitor detail-]
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%lframe width=100px valign=center% [[Attach:diodes_400x.jpg | Attach:diodes_400x.jpg "1N4001 diodes"]] | [-1N4001 diodes-]
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%lframe width=100px valign=center% [[Attach:diodes_400x.jpg | Attach:diodes_400x.jpg"1N4001 diodes"]] | [-1N4001 diodes-]
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%lframe width=100px valign=center% [[Attach:diodes_zener.jpg | Attach:diodes_zener.jpg "zener diodes"]] | [-zener diodes-]
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%lframe width=100px valign=center% [[Attach:diodes_zener.jpg | Attach:diodes_zener.jpg"zener diodes"]] | [-zener diodes-]
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%lframe width=100px valign=center% [[Attach:transistors.jpg | Attach:transistors.jpg "transistors"]] | [-transistors-]
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%lframe width=100px valign=center% [[Attach:transistors.jpg | Attach:transistors.jpg"transistors"]] | [-transistors-]
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%lframe width=100px valign=center% [[Attach:power_jack.jpg | Attach:power_jack.jpg "DC power jack, disassembled"]] | [-DC power jack, disassembled-]
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%lframe width=100px valign=center% [[Attach:power_jack.jpg | Attach:power_jack.jpg"DC power jack, disassembled"]] | [-DC power jack, disassembled-]
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%lframe width=100px valign=center% [[Attach:power_jack_2.jpg | Attach:power_jack_2.jpg "DC power jack"]] | [-DC power jack-]
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%lframe width=100px valign=center% [[Attach:power_jack_2.jpg | Attach:power_jack_2.jpg"DC power jack"]] | [-DC power jack-]
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%lframe width=100px valign=center% [[Attach:battery_holder.jpg | Attach:battery_holder.jpg "AA battery holder"]] | [-AA battery holder-]
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%lframe width=100px valign=center% [[Attach:battery_holder.jpg | Attach:battery_holder.jpg"AA battery holder"]] | [-AA battery holder-]
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%lframe width=100px valign=center% [[Attach:battery_snap.jpg | Attach:battery_snap.jpg "9V battery snap"]] | [-9V battery snap-]
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%lframe width=100px valign=center% [[Attach:battery_snap.jpg | Attach:battery_snap.jpg"9V battery snap"]] | [-9V battery snap-]
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%lframe width=100px valign=center% [[Attach:servomotor.jpg | Attach:servomotor.jpg "servomotor"]] | [-servomotor-]
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%lframe width=100px valign=center% [[Attach:servomotor.jpg | Attach:servomotor.jpg"servomotor"]] | [-servomotor-]
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%lframe width=100px valign=center% [[Attach:dc_motor.jpg | Attach:dc_motor.jpg "DC motor"]] | [-DC motor-]
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%lframe width=100px valign=center% [[Attach:dc_motor.jpg | Attach:dc_motor.jpg"DC motor"]] | [-DC motor-]
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%lframe width=100px valign=center% [[Attach:gear_kit.jpg | Attach:gear_kit.jpg "gearbox kit"]] | [-gearbox kit-]
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%lframe width=100px valign=center% [[Attach:gear_kit.jpg | Attach:gear_kit.jpg"gearbox kit"]] | [-gearbox kit-]
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%lframe width=100px valign=center% [[Attach:h_bridge.jpg | Attach:h_bridge.jpg "H-bridge"]] | [-H-bridge-]
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%lframe width=100px valign=center% [[Attach:h_bridge.jpg | Attach:h_bridge.jpg"H-bridge"]] | [-H-bridge-]
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%lframe width=100px valign=center% [[Attach:screw_terminals.jpg | Attach:screw_terminals.jpg "screw terminals"]] | [-screw terminals-]
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%lframe width=100px valign=center% [[Attach:screw_terminals.jpg | Attach:screw_terminals.jpg"screw terminals"]] | [-screw terminals-]
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%lframe width=100px valign=center% [[Attach:breadboard_short.jpg | Attach:breadboard_short.jpg "solderless breadboard"]] | [-solderless breadboard-]
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%lframe width=100px valign=center% [[Attach:breadboard_short.jpg | Attach:breadboard_short.jpg"solderless breadboard"]] | [-solderless breadboard-]
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%lframe width=100px valign=center% [[Attach:breadboard_short.jpg | Attach:breadboard_short.jpg "solderless breadboard"]] | [-solderless breadboard-]
[[<<]]
%lframe width=100px valign=center% [[Attach:resistors.jpg | Attach:resistors.jpg "resistors"]] | [-resistors-]
[[<<]]
%lframe width=100px valign=center% [[Attach:leds.jpg | Attach:leds.jpg "LEDs"]] | [-LEDs-]
[[<<]]
%lframe width=100px valign=center% [[Attach:potentiometer.jpg | Attach:potentiometer.jpg "potentiometer"]] | [-potentiometer-]
[[<<]]
%lframe width=100px valign=center% [[Attach:pots_trimmer.jpg | Attach:pots_trimmer.jpg "trimmer potentiometers"]] | [-trimmer potentiometers-]
[[<<]]
%lframe width=100px valign=center% [[Attach:switches_momentary.jpg | Attach:switches_momentary.jpg "momentary switches"]] | [-momentary switches-]
[[<<]]
%lframe width=100px valign=center% [[Attach:switches_toggle.jpg | Attach:switches_toggle.jpg "toggle switches"]] | [-toggle switches-]
[[<<]]
%lframe width=100px valign=center% [[Attach:photocell.jpg | Attach:photocell.jpg "photocell"]] | [-photocell-]
[[<<]]
%lframe width=100px valign=center% [[Attach:thermistor.jpg | Attach:thermistor.jpg "thermistor"]] | [-thermistor-]
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%lframe width=100px valign=center% [[Attach:caps_ceramic.jpg | Attach:caps_ceramic.jpg "ceramic capacitors"]] | [-ceramic capacitors-]
[[<<]]
%lframe width=100px valign=center% [[Attach:caps_electrolytic.jpg | Attach:caps_electrolytic.jpg "electrolytic capacitors"]] | [-electrolytic capacitors-]
[[<<]]
%lframe width=100px valign=center% [[Attach:cap_electrolytic_detail.jpg | Attach:cap_electrolytic_detail.jpg "electrolytic capacitor detail"]] | [-electrolytic capacitor detail-]
[[<<]]
%lframe width=100px valign=center% [[Attach:diodes_400x.jpg | Attach:diodes_400x.jpg "1N4001 diodes"]] | [-1N4001 diodes-]
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%lframe width=100px valign=center% [[Attach:diodes_zener.jpg | Attach:diodes_zener.jpg "zener diodes"]] | [-zener diodes-]
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%lframe width=100px valign=center% [[Attach:transistors.jpg | Attach:transistors.jpg "transistors"]] | [-transistors-]
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%lframe width=100px valign=center% [[Attach:power_jack.jpg | Attach:power_jack.jpg "DC power jack, disassembled"]] | [-DC power jack, disassembled-]
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%lframe width=100px valign=center% [[Attach:power_jack_2.jpg | Attach:power_jack_2.jpg "DC power jack"]] | [-DC power jack-]
[[<<]]
%lframe width=100px valign=center% [[Attach:battery_holder.jpg | Attach:battery_holder.jpg "AA battery holder"]] | [-AA battery holder-]
[[<<]]
%lframe width=100px valign=center% [[Attach:battery_snap.jpg | Attach:battery_snap.jpg "9V battery snap"]] | [-9V battery snap-]
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%lframe width=100px valign=center% [[Attach:servomotor.jpg | Attach:servomotor.jpg "servomotor"]] | [-servomotor-]
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%lframe width=100px valign=center% [[Attach:dc_motor.jpg | Attach:dc_motor.jpg "DC motor"]] | [-DC motor-]
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%lframe width=100px valign=center% [[Attach:gear_kit.jpg | Attach:gear_kit.jpg "gearbox kit"]] | [-gearbox kit-]
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%lframe width=100px valign=center% [[Attach:h_bridge.jpg | Attach:h_bridge.jpg "H-bridge"]] | [-H-bridge-]
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%lframe width=100px valign=center% [[Attach:relay.jpg | Attach:relay.jpg  "reed relay"]] | [-reed relay-]
[[<<]]
%lframe width=100px valign=center% [[Attach:screw_terminals.jpg | Attach:screw_terminals.jpg "screw terminals"]] | [-screw terminals-]
[[<<]]

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%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/leds.jpg
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%lframe width=100px valign=center% [[Attach:leds.jpg | Attach:leds.jpg"LEDs"]] | [-LEDs-]
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[<<]
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[[<<]]
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[<<]
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%lframe width=100px valign=center% [[Attach:v_reg_33v.jpg | Attach:v_reg_33v.jpg"3.3V Voltage Regulator"]] | [-3.3V voltage regulator-]

3.3V regulators are also common. Note that these ones don't have the same pin configuration as the 7805 regulators!

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%lfloat margin=10%Attach:v_reg_7805.jpg
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%lframe width=100px valign=center% [[Attach:v_reg_7805.jpg | Attach:v_reg_7805.jpg"5V Voltage Regulator"]] | [-5V voltage regulator-]
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%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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%lfloat margin=10%Attach:v_reg_7805.jpg
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'''LEDs'''
to:
'''LED'''
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Link to 7805 datasheet

to:
[[http://www.national.com/ds.cgi/LM/LM341.pdf |Link to 7805 datasheet]]

Changed lines 24-26 from:
LEDs can only handle a limited amount of current and voltage. The details should be covered in each LED's datasheet, but if not, here's a link to a handy [[http://home.cogeco.ca/~rpaisley4/LEDcalc.html |LED current calculator]].

to:
LEDs can only handle a limited amount of current and voltage. The details should be covered in each LED's datasheet, but if not, here's a link to a handy [[http://home.cogeco.ca/~rpaisley4/LEDcalc.html |LED current calculator]]. For most common LEDs running at 5 volts, a resistor between 220 and 1K ohms will do the job.

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Here are some of the components you'll use frequently when making electronic circuits.
to:
Here are some of the components you'll use frequently when making electronic circuits. For more on any component, check out its datasheet.
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Link to 7805 datasheet

Added lines 23-26:

LEDs can only handle a limited amount of current and voltage. The details should be covered in each LED's datasheet, but if not, here's a link to a handy [[http://home.cogeco.ca/~rpaisley4/LEDcalc.html |LED current calculator]].

Changed lines 17-19 from:
LEDs, or Light Emitting Diodes, are diodes that emit light when given the correct voltage.  Like all diodes, they are '''polarized''', meaning that they only operate when oriented correctly in the circuit.  The '''anode''' of the LED connects to voltage, and the '''cathode''' connects to ground.  The anode in the LEDs in this photo is the longer leg on each LED. LEDs come in many diferent packages. The packages above have built-in lenses.
to:
LEDs, or Light Emitting Diodes, are diodes that emit light when given the correct voltage.  Like all diodes, they are '''polarized''', meaning that they only operate when oriented correctly in the circuit.  The '''anode''' of the LED connects to voltage, and the '''cathode''' connects to ground.  The anode in the LEDs in this photo is the longer leg on each LED. LEDs come in many diferent packages. The packages above have built-in lenses.

These LEDs are the cheapest you can buy, and they're not very bright.  You can get superbright LEDs as well, which are much brighter. If you're working on applications that need very small light sources, you can also get LEDs in a surface mount package
.
Added lines 11-12:
The 7800 series regulators come in many different voltages.  7805 is a 5-volt regulator.  7809 is a 9-volt regulator. 7812 is a 12-volt regulator. All the regulators of this family have the same pin connections.  In the image above, the left leg is connected to the input voltage.  The middle leg is connected to ground.  The right leg is the output voltage.
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%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/led.jpg
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%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/leds.jpg
Changed lines 9-15 from:
Note the label on the regulator that reads "7805".  Check the label on every component.  This physical form factor, called the '''package''', is used by many different components, and not all of them are voltage regulators. This is a TO-220 package.
to:
Note the label on the regulator that reads "7805".  Check the label on every component.  This physical form factor, called the '''package''', is used by many different components, and not all of them are voltage regulators. This is a TO-220 package.

'''LEDs'''

%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/led.jpg

LEDs, or Light Emitting Diodes, are diodes that emit light when given the correct voltage.  Like all diodes, they are '''polarized''', meaning that they only operate when oriented correctly in the circuit.  The '''anode''' of the LED connects to voltage, and the '''cathode''' connects to ground.  The anode in the LEDs in this photo is the longer leg on each LED. LEDs come in many diferent packages. The packages above have built-in lenses.
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%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output. %hspace=5 vspace=5%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.

%lfloat margin=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output. %hspace=10 vspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output. %hspace=5 vspace=5%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output. %hspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output. %hspace=10 vspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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'''Voltage Regulator'''%hspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.
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'''Voltage Regulator'''

Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output. %hspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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'''Voltage Regulator'''

%hspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.
to:
'''Voltage Regulator'''%hspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.
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%center%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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%hspace=10%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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%center%http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg
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Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.
to:
Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.

Note the label on the regulator that reads "7805".  Check the label on every component.  This physical form factor, called the '''package''', is used by many different components, and not all of them are voltage regulators. This is a TO-220 package
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Here are some of the components you'll use frequently when making electronic circuits.

'''Voltage Regulator'''

http://itp.nyu.edu/physcomp/images/labs/voltage_reg.jpg

Voltage regulators take a range of DC voltage and convert it to a constant voltage.  For example, this regulator, a 7805 regulator, takes a range of 8 - 15 volts DC input and converts it to a constant 5-volt output.
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