Self-adaptive constant current load circuit and power supply circuit
The utility model relates to a self-adaptive constant current load circuit and a power supply circuit, which can provide a self-adaptive constant current load when a capacitor needs to be discharged, and the self-adaptive constant current load circuit comprises a first constant current circuit, a vo...
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| creator | PANG YUQI DENG YUNKANG |
| description | The utility model relates to a self-adaptive constant current load circuit and a power supply circuit, which can provide a self-adaptive constant current load when a capacitor needs to be discharged, and the self-adaptive constant current load circuit comprises a first constant current circuit, a voltage sampling circuit and at least one second constant current circuit, the first constant current circuit comprises a constant current control unit and a resistor R3; the voltage sampling circuit is used for detecting the voltage of the capacitor and controlling the on and off of the second constant-current circuit so as to control the resistance value of the constant-current load setting resistor; therefore, the constant current value of the capacitor during high-voltage discharge is small, the constant current value of the capacitor during low-voltage discharge is large, and the switching tube Q1 is always in the optimal working interval. According to the utility model, when the output voltage is switched, the |
| format | Patent |
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| language | chi ; eng |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION |
| title | Self-adaptive constant current load circuit and power supply circuit |
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