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Electrical equipment overheating "brake sound" sound warning circuit diagram
Source: InternetPublisher:spectrum Keywords: Electrical equipment circuit diagrams multivibrators Updated: 2020/11/02
The picture shows the analog sound warning circuit of electrical equipment . It consists of an 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.
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