| 摘要 |
A control circuit for use with a switch power converter is disclosed. The control circuit includes a capacitor device electrically connected between a variable resistor of the feedback circuit and ground in series, a first divider resistor electrically connected between the variable resistor and the controlled switch circuit in series, a second divider resistor electrically connected between the first divider resistor and ground in series, and a controlled switch electrically connected among the controlled switch circuit, the first divider resistor and ground. The variable resistor has a resistance varying with a voltage value of the load. Furthermore, when an overall voltage value of the first and second divider resistors varies with the resistance of the variable resistor to switch the controlled switch for further optionally enabling the controlled switch circuit to allow the transformer with the peripheral circuit to process the energy transformation.
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