电源软启动电路、开关电源及设备
By combining a power supply voltage divider module, a control module, and a relay module, the relay switching state is controlled, and a current-limiting resistor is inserted in series to reduce the inrush current when the switching power supply starts up. This solves the problem of high current during power supply startup and achieves circuit stability and efficient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, when a switching power supply starts up, the instantaneous inrush current is too large due to the initial zero voltage of the filter capacitor, which may damage circuit components and cause irreversible failures.
The circuit employs a combination of a power divider module, a control module, a capacitor charging module, and a relay module. The relay switching state is controlled by voltage division and charging. A current-limiting resistor is connected in series during circuit startup to reduce instantaneous inrush current, and the current-limiting resistor is short-circuited after the circuit returns to stability to reduce energy loss.
It effectively reduces inrush current and voltage spikes during power-on, protects circuit components, improves circuit stability and reliability, reduces energy loss, and extends the service life of circuit components.
Smart Images
Figure CN224520930U_ABST