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Electrical equipment overheating "brake sound" sound warning circuit
Source: InternetPublisher:子丑寅卯 Updated: 2013/09/23
The picture shows the analog sound warning circuit of electrical equipment. It consists of a temperature overheating electronic switch, a controllable multivibrator, an analog sound circuit, an audio power amplifier circuit and an AC step-down rectifier circuit. 555 and R2, R3, Cl, etc. form a controllable multivibrator. Its multivibrator frequency is:
the oscillation period To (=1/fo) of the parameters shown in the figure is 10s. Latest Control Circuits Circuits
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