A resistor-capacitor power supply circuit

By introducing a voltage regulator and current shunt unit and a capacitor charging and discharging module into the RC power supply circuit, the problem of damage to the voltage regulator device under light load is solved, thereby improving the stability and reliability of the power supply circuit and the effective utilization of AC energy.

CN224555490UActive Publication Date: 2026-07-24HOLLEY METERING LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HOLLEY METERING LTD
Filing Date
2025-08-07
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing RC power supply circuits are prone to damage to the voltage regulator under light load conditions, resulting in reduced power supply stability and reliability. At the same time, the negative half-wave energy is not effectively utilized, affecting the lifespan of the power supply circuit.

Method used

A voltage regulation and current shunt unit and a capacitor charging and discharging module were designed. The power shunt module shunts the voltage regulator when the power is too high to avoid damage, and the capacitor stores the negative half-wave energy for use by the downstream load.

Benefits of technology

It improves the reliability and lifespan of the power supply circuit, increases the conversion rate of AC power, simplifies the circuit structure, and reduces costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224555490U_ABST
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Abstract

The utility model provides a kind of resistance-capacitance power supply circuit.At least including: AC power supply module, resistance-capacitance voltage reduction module, voltage stabilizing shunt module and capacitor charge-discharge module.Input end of the resistance-capacitance voltage reduction module is connected with the first output end of AC power supply module, the voltage stabilizing shunt module, the capacitor charge-discharge module is connected between the output end of the resistance-capacitance voltage reduction module and the second output end of AC power supply module.The voltage stabilizing shunt module includes voltage stabilizing module and power shunt module, the voltage stabilizing module stabilizes resistance-capacitance voltage reduction module output signal, when the output voltage of voltage stabilizing module exceeds threshold value, trigger power shunt module to carry out power shunting to avoid damaging the voltage stabilizing module.The utility model avoids the case that the energy of power supply front stage is large and is all collected in the both ends of voltage stabilizing device by specially setting voltage stabilizing shunt module, improves the reliability and life of voltage stabilizing circuit / voltage stabilizing tube, improves the ability of entire resistance-capacitance power supply circuit to resist instantaneous high voltage (surge).
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