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Voice activated two transformer three transistors switch with relay and led.
Автор: Chan Heosicane
Загружено: 2025-07-12
Просмотров: 10
Описание:
This circuit uses one PNP transistors with 470 k resistor and 1k resistor divided by resistance of variable resistor.
A push pull transistors circuit with other amplifierication turns on the relay.
This relay max contact voltage is 3 volts and max input voltage is 9 v.
This amplifies the sound from the earpiece and turns on the light emitting diode lamp.
Thanks for watching.
Chan.
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