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Money detector circuit

2014-11-02 07:18  
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Money detector circuit
This voice alarm money detector circuit can be used to identify the counterfeit currency, it uses the sound of Please note that this is the counterfeit currency to remind the user, the internal circuit is as shown in the figure. It is composed of the magnetic trace detection circuit, the watermark detection circuit, the fluorescence instruction circuit, the power supply circuit and the voice alarm circuit.etc.