Auto Flash Alarm - Staircase_Control


Posted on Feb 4, 2014

Work of the circuit The circuit consists of low-frequency oscillator, the electronic switch circuit, control circuit, photoelectric display circuit and music alarm circuit. (It is showed in picture 7-113.) Low-frequency oscillator consists of IC lCl (Dl-D4) internal NAND gate circuit D3, D4 and external RC components. Control circuit consists..


Auto Flash Alarm - Staircase_Control
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