| 摘要 |
A power source for a developing bias comprises an input power source, a standard voltage generating means which generates standard voltage employing the input power source, a pulse transformer on which the standard voltages are impressed as a direct current voltage to be switched on and off, clock pulse generating means which generates clock pulses with a fixed cycle and fixed duty ratio, and switching means driven by the clock pulses for switching the pulse transformer to provide a regulated output voltage. The circuit of the invention eliminates the need for a feedback loop to compensate for load variations.
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