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High-reliability protective circuit

A protection circuit and reliability technology, applied in the field of high-reliability protection circuits, can solve problems such as damage to electronic components, inability to work, failure of electronic equipment, etc., to achieve the effect of enhanced reliability and enhanced protection functions

Inactive Publication Date: 2014-03-26
CHENGDU HONGSHAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because there are many electronic components integrated in the electronic equipment, when using these electronic equipment, the electronic equipment sometimes breaks down. When the excessive voltage acts on the electronic equipment, the internal electronic components of the electronic equipment will be damaged, seriously It may damage the electronic components and make them unable to work

Method used

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  • High-reliability protective circuit

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Embodiment

[0016] Such as figure 1 A high-reliability protection circuit is shown, which includes a transformer, one end of the first primary side of the transformer is connected to the collector of the transistor T2, and the base of the transistor T2 is connected to the transistor through a resistor R4 On the collector of T1, the base of the triode T1 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the cathode of the capacitor C1 and the diode D2 through the resistor R1, and the other of the capacitor C1 One end and the anode of the diode D2 are respectively connected to the two ends of the second primary side of the transformer, the emitter of the triode T1 and the emitter of the triode T2 are respectively connected to the ground through the resistor R2 and the resistor R3, and the secondary side of the transformer One end of the secondary side is connected to the ground through the resistor R5, the other end of the secondary side is connected to ...

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Abstract

The invention discloses a high-reliability protective circuit comprising a transformer. One end of the first primary side of the transformer is connected to a collector of a triode T2. A base of the triode T2 is connected to a collector of a triode T1 through a resistor R4. A base of the triode T1 is connected to an anode of a diode D1. A cathode of the diode D1 is connected with both a capacitor C1 and a cathode of a diode D2 through a resistor R1. The other end of the capacitor C1 and an anode of the diode D2 are connected to two ends of the secondary primary side of the transformer respectively. One end of the auxiliary side of the transformer is grounded through a resistor R5, and the other end of the auxiliary side of the transformer is connected to an anode of the diode D3. A cathode of the diode D3 is connected to a cathode of a diode D4. An anode of the diode D4 is grounded. The high-reliability protective circuit has the function of double overvoltage protection, and is capable of protecting electronic equipment highly reliably and ensuring safety of the electronic equipment.

Description

technical field [0001] The present invention relates to a protection circuit, more specifically to a protection circuit with high reliability. Background technique [0002] With the advancement of science and technology, electronic devices are becoming more and more popular. For example: TV, PC, mobile phone, tablet, camera, MP3, etc. Because there are many electronic components integrated in the electronic equipment, when using these electronic equipment, the electronic equipment sometimes breaks down. When the excessive voltage acts on the electronic equipment, the internal electronic components of the electronic equipment will be damaged, seriously It may damage the electronic components and make them unable to work. Contents of the invention [0003] The invention provides a high-reliability protection circuit, which has double overvoltage protection functions and has high reliability for protecting electronic equipment. When the voltage is too high, the electronic e...

Claims

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Application Information

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IPC IPC(8): H02H7/20
Inventor 黄友华
Owner CHENGDU HONGSHAN TECH
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