voice operated delay lamp circuit

Published:2011/8/19 6:35:00 Author: | Keyword: voice operated, delay, lamp circuit | From:SeekIC

The telephone-table lamp shown in the picture can light automatically when it rings in the evening or it is off-hook,and it will extinguish after a delay of 45s when it is on-hook.Usually it can be used as a general dimming lamp without switch. And when it is used as a delay light,it will extinguish after a delay of 45s if you press the delay button.The circuit has many applications,and it is formed mainly by the optical coupling circuit, light control circuit, negative pulse generating circuit, monostable trigger circuit, thyristor switch circuit and power circuit.



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