Published:2011/7/7 5:45:00 Author:Lucas | Keyword: Voltage conversion , frequency conversion | From:SeekIC
A1 integrates for the input voltage Ui, and the output voltage is applied also to the inverting input, which is compared with the same input reference voltage. If it is less than the reference voltage, A2 outputs high, VT1 turns on, then C1 begins to charge and discharge. The circuit can switch 0-lV voltage signal to 0-10Hz frequency signal.
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