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measuring_amps_schem

Schematic image of how to measure amperage of three LEDs in parallel. The circuit is similar to the parallel circuit shown above. At left, there is a power plug. The positive terminal of the power plug is connected to the voltage input of a 7805 voltage regulator. The negative terminal of the power plug is connected to the ground terminal of the regulator. The voltage output of the regulator is connected to one side of a pushbutton. The other side of the pushbutton is connected to a 220-ohm resistor. The other side of the resistor is connected to the anodes of three LEDs. A meter set to measure amperage is inserted between the resistor and one of the LEDs. The cathodes of the three LEDs are connected to the ground terminal of the regulator.

Schematic view of measuring amperage of one LED of three LEDs wired in parallel.

Posted on August 28, 2014August 14, 2018 Full size 601 × 402

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Published inLab: Electronics

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