| 摘要 |
A circuit for generating a constant DC high voltage responsive to an input signal having various frequencies, having a frequency-voltage converter responsive to the input signal to generate a voltage signal corresponding to the frequency of the input signal. The voltage signal is applied to an oscillation circuit and a voltage control circuit, respectively, as a control signal. The output from the oscillation circuit is coupled to one terminal of a primary coil of a flyback transformer (FBT), and the output from the voltage control circuit is coupled to the other terminal of the primary coil of the flyback transformer (FBT).
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