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Valuables detection circuit design

Source: InternetPublisher:拳制龙 Keywords: Amplifiers power supplies and other power circuits Updated: 2020/07/27

In order to meet the requirements of valuables detection, a tuned loop resonant amplifier is placed in the card. The card is hung on the valuables. The card emits a radio frequency signal. When it enters and exits the dormitory, it resonates with the secondary coil and the load voltage changes. , through the detection of the load, the entry and exit of personnel can be recorded. The circuit is shown in the figure.

 

Valuables detection circuit design

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