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Audio-Controlled Incandescent Lamp Light Controller circuit

2016-08-12 17:54  
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Audio-Controlled Incandescent Lamp Light Controller circuit
This is a audio-controlled lamp circuit. This circuit requires low voltage input such as pre-amplifiers, tone control, or general audio line level output. It’s also possible to feed the input with signal from small power amplifier output, or high power amplifier witk low volume level. The characteristic of lamp dimming (incandescent lamp) will look like coming from proportional controller since the switching rate of the TRIAC would be much higher than the lamp dimming response. Here is the schematic diagram of the circuit: