Automatic gradient circuit diagram
Source: InternetPublisher:失踪的猫 Keywords: circuit diagram audio LED Updated: 2021/07/08
In this circuit, the audio is sent to the control channel and is amplified and modified by D1 and D2. This DC level activates LED D3 via Q2 . D3 generates R9, a light dependent resistor that will reduce resistance. R11 (audio gain) is set higher so more audio is present at Q1's output.
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