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- 2012-11-26
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Description: 555 is a cheap and widely used circuit, where a special extract of 555 by VCO (voltage controlled oscillator) and VFC (voltage-frequency converter) for low-cost high-precision measurement of the voltage circuit unit 555 for-----" measuring the voltage of the circuit " in the voltage measurement method, the corresponding output voltage signal to the input frequency, for reference!
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555 用于测量的电路.pdf