Novel voltage clamping circuit
By using a combination circuit design of four Zener diodes and two transistors, the instability problem caused by temperature changes in the voltage clamping circuit was solved, achieving voltage stability and circuit reliability.
CN224289295UActive Publication Date: 2026-05-26SUZHOU FULL-WAY ELECTRONIC TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU FULL-WAY ELECTRONIC TECH CO LTD
- Filing Date
- 2024-09-30
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
In existing voltage clamping circuits, the performance of Zener diodes and transistors changes with temperature, resulting in unstable clamping voltage, which can easily lead to damage, especially in high-power applications.
Method used
A circuit design using four Zener diodes and two transistors is employed. By utilizing the negative temperature coefficient of the Zener diodes and the positive temperature coefficient of the base-emitter voltage of the transistors, combined with resistors to limit the current, the stability of the clamping voltage is ensured.
Benefits of technology
It effectively reduces the impact of temperature on clamping voltage, prevents excessive current from damaging the circuit, and provides a reliable and stable voltage signal.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224289295U_ABST
Abstract
The utility model relates to the technical field of voltage clamping circuits, and discloses a novel voltage clamping circuit which comprises a first Zener diode, a second Zener diode, a third Zener diode, a fourth Zener diode, a first resistor, a second resistor and a first triode, and a power supply circuit comprises a second triode. By reducing the number of the Zener diodes and connecting the second triode in series with the first triode, the voltage clamping range of the VCCCLAM is reduced, the temperature coefficient is optimized, the maximum current in the circuit is limited through the first resistor, the circuit is prevented from being burnt out, the clamping voltage is slightly influenced by the temperature, and the maximum current of the circuit is limited.
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