| 摘要 |
PURPOSE: A power supply is provided to achieve a sub power source by using only resistors and capacitors without using a separate sub wiring in a main wiring. CONSTITUTION: A power supply comprises a first diode having an anode connected to an end of the secondary wiring, a first capacitor connected between a cathode of the first diode and a ground, a coil for supplying smoothed power output from the cathode of the first diode as a main charging power, a second electrolyte capacitor for smoothing again the power as the main charging power through the coil, a capacitor for receiving an anode power of the first diode through a first resistor and charging the power, a third diode having a cathode connected with the capacitor and an anode connected with the ground, a second diode having an anode connected with a cathode of the third diode, a second resistor connected between a cathode of the second diode and the ground, and a third capacitor connected with the second resistor for smoothing the power corresponding to the RC resonance and supplying them as a sub power.
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