Light-controlled ultra-low frequency oscillation circuit
Source: InternetPublisher:赔钱虎 Keywords: Low frequency oscillation oscillation circuit light control ultra-low frequency Updated: 2021/10/08
Shown is a light-controlled ultra-low frequency oscillation circuit , which is mainly
composed of a power supply circuit, an ultra-low frequency oscillation circuit and an electronic switch circuit .
The power supply circuit is mainly
composed . The mains AC voltage of 220 V reduces the voltage of capacitor C1, diode vs stabilizer, and rectifier diode VD. After filtering with capacitor C2,
a DC +5 V voltage is output to power other components in the circuit. The
ultra -low frequency oscillation circuit is mainly composed of photoresistor RG, adjustable resistor RP, transistor vr2 and peripheral related components. Tuning
the resistance value of RP can change the frequency of the oscillator and the light control sensitivity.
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