This is a circuit diagram Led pilot using FET. The FET (Field Effect transistor) is ECG312, NTE312 good for up to 30Vdc max. MPF102 that will also work with both, only the max voltage is 25V. This is the figure of the circuit.
Principles of circuit when this is the gate and source associated with, the current behaves as a regulator. In circuits that are on the constant is between 6 and 8 mA at 5 to 30Vdc. Because the set at this time is about 6mA older than the LED will glow a little in the answer. If the diode is added, such as 1N4148 or similar, can be connected to a source of AC-AC 5-20 V (NTE312).
Principles of circuit when this is the gate and source associated with, the current behaves as a regulator. In circuits that are on the constant is between 6 and 8 mA at 5 to 30Vdc. Because the set at this time is about 6mA older than the LED will glow a little in the answer. If the diode is added, such as 1N4148 or similar, can be connected to a source of AC-AC 5-20 V (NTE312).
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