Power supply circuit with self-discharging function and power supply adapter

By setting up a discharge circuit in parallel in the power conversion circuit of the power adapter, instant discharge is achieved, which solves the problem of electric shock after the power adapter is not used for a long time, and improves safety and discharge efficiency.

CN222691586UActive Publication Date: 2025-03-28DONGGUAN MENTECH OPTICAL & MAGNETIC CO LTD
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Patent Information

Application Number
CN202421382840.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-17
Publication Date
2025-03-28
Estimated Expiration
2034-06-17

AI Technical Summary

Technical Problem

The existing power adapters may have a risk of electric shock after being unused for a long time, and the self-discharge function of existing power adapters on the market is inefficient and cannot effectively eliminate charges, which poses safety risks.

Method used

A power supply circuit with self-discharge function is designed. By setting the discharge circuit in parallel at the input end of the electrical energy conversion circuit, including the controller U1, the discharge resistor and the rectifier diode, the instantaneous discharge at the moment when the adapter is powered off, and the charge is quickly eliminated.

Benefits of technology

Through the instant discharge function, the discharge effect of the power adapter is effectively improved, the risk of electric shock is avoided, the safety of users is improved, and rapid discharge is achieved without affecting the normal operation of the power adapter.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to the related technical field of power adapters, and provides a power supply circuit with a self-discharging function and a power adapter, the power supply circuit comprises an electric energy conversion circuit, and two ends of an input end circuit of the electric energy conversion circuit are connected in parallel with a discharging circuit; the discharging circuit comprises a controller U1, a discharging resistor and two rectifier diodes, the positive electrodes of the two rectifier diodes are connected to the two ends of the input end circuit respectively, and the negative electrodes of the rectifier diodes are connected to a detection pin HV of the controller U1 through the discharging resistor after being connected. The discharge circuit provided by the utility model can discharge instantly when the adapter is powered off, thereby effectively improving the discharge effect of the two AC input ends (namely, the two ends of the PIN) of the power adapter, and avoiding the risk of electric shock.
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