Simple low-cost on-vehicle low-power power supply protecting circuit

A power protection, low-cost technology, used in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc.

Inactive Publication Date: 2016-08-10
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problems existing in the P5 test of automotiv...

Method used

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  • Simple low-cost on-vehicle low-power power supply protecting circuit
  • Simple low-cost on-vehicle low-power power supply protecting circuit

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specific Embodiment approach 1

[0021] Specific implementation mode one: the following combination figure 1 Description of this embodiment, the simple low-cost vehicle-mounted low-power power supply protection circuit described in this embodiment includes a voltage regulator diode RD1, a bidirectional voltage regulator diode RD2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, an electrolytic capacitor C1 and Capacitor C2;

[0022] The anode of Zener diode RD1 is used as the high voltage input terminal of P5;

[0023] The cathode of the Zener diode RD1 is simultaneously connected to one end of the resistor R1 and one end of the resistor R3, and the other end of the resistor R1 is simultaneously connected to one end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4;

[0024] The other end of the resistor R2 is simultaneously connected to the other end of the resistor R4, one end of the bidirectional voltage regulator diode RD2, the positive electrode of the elect...

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PUM

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Abstract

A simple low-cost vehicle-mounted low-power power supply protection circuit belongs to the field of automotive circuit control. The invention aims to solve the problems existing in the P5 test of automotive electronic devices. The present invention includes voltage stabilizing diode RD1, bidirectional voltage stabilizing diode RD2, resistors R1-R4, electrolytic capacitor C1 and capacitor C2; the anode of voltage stabilizing diode RD1 is used as the high voltage input end of P5; the cathode of voltage stabilizing diode RD1 is connected to one end of resistor R1 at the same time and one end of resistor R3, the other end of resistor R1 is simultaneously connected to one end of resistor R2, the other end of resistor R3 and one end of resistor R4; the other end of resistor R2 is connected to the other end of resistor R4, one end of bidirectional voltage regulator diode RD2, The anode of the electrolytic capacitor C1 and one end of the capacitor C2 serve as the output end of the protection circuit; the other end of the bidirectional voltage regulator diode RD2 is simultaneously connected to the negative electrode of the electrolytic capacitor C1 and the other end of the capacitor C2, and is grounded.

Description

technical field [0001] The invention belongs to the field of automobile circuit control. Background technique [0002] With the continuous increase in the number and types of automotive electronic equipment, the electromagnetic environment in the car is becoming increasingly complex. At the same time, the electronic equipment and devices on the car are very sensitive to electromagnetic interference, and mutual interference between electronic components occurs from time to time. If electromagnetic interference occurs while driving, it will degrade the performance of the disturbed components, or cause complete loss of device functions, which will bring serious safety hazards to the driver. In order to assess the transient voltage disturbance and anti-interference ability of automotive electronic equipment, the International Organization for Standardization has formulated ISO-7637-2 "Road Vehicles-Electrical Disturbance Caused by Transmission and Coupling Part 2", the most str...

Claims

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Application Information

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IPC IPC(8): H02H9/02H02H9/04
CPCH02H9/02H02H9/041
Inventor 郑祥滨孙孝武刘金泽
Owner AEROSPACE HI TECH HLDG GROUP
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