Ac To Dc Current; Current Meter - Elenco Electronics Snap Circuits Instruction Manual

Project #359
Project #360
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AC to DC Current

OBJECTIVE: To convert an AC current to DC using an LED.
Pressing and releasing the press switch (S2) continuously generates
an AC current. The LED (D1) is used to convert the AC current to DC
current because it only allows the current to flow in one direction. The
LED should light as the meter (M2) deflects to the right only. Without
the LED, the meter would deflect in both directions.

Current Meter

OBJECTIVE: To measure the current through a transformer.
By placing the meter (M2), diode (D3) and current limiting resistor (R4)
on the transformer (T1), you can measure the current. Turn on the
slide switch (S1) and the motor (M1) starts spinning. Current flows
through the primary and secondary of the transformer.