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Thermistor temperature control cold bird chirping sound circuit
Source: InternetPublisher:念念Brown Updated: 2017/07/09
The circuit is shown in the figure. It consists of a temperature detection circuit, a power-on and power-off detection circuit, a relay control motor circuit, a birdsong sound circuit and an AC step-down rectifier circuit. Keep the temperature in the freezer within the set temperature range and make a sweet bird chirping sound when cooling. Latest Control Circuits Circuits
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