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Vehicle-mounted equipment and power supply pulse suppression circuit thereof

A pulse suppression and transient voltage suppression technology, applied in the direction of transducer circuits, electrical components, sensors, etc., can solve the problems of unstable output voltage of automobile level, lack of protection against high-voltage pulses, unstable peak voltage, etc., to achieve Improve the effect of pulse suppression, improve work stability, and ensure the effect of anti-interference ability

Inactive Publication Date: 2019-10-01
广州市车厘子电子科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the automotive electrical system, the electronic switch usually interferes with the car battery and electronic equipment, causing the output voltage of the car level to be unstable, and the unstable peak voltage will damage the electronic equipment that does not have protection against high-voltage pulses.

Method used

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  • Vehicle-mounted equipment and power supply pulse suppression circuit thereof

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Embodiment 1

[0045] see figure 1 As shown, a power pulse suppression circuit 100 mainly includes a bidirectional transient voltage suppression diode D1, a π-type filter circuit 101, and a voltage stabilizing circuit 102.

[0046] Wherein, the bidirectional transient voltage suppression diode D1 is electrically connected between the anode Vin of the external voltage input and the ground, when the external voltage signal Vin is connected, when the high voltage pulse voltage value is greater than the breakdown of the bidirectional transient voltage suppression diode D1 When the voltage is high, the bidirectional transient voltage suppression diode D1 breaks down and conducts, and the high-voltage pulse whose voltage is higher than the breakdown voltage is bypassed to the ground through the bidirectional transient voltage suppression diode D1, thereby realizing the high-voltage pulse suppression of the external input voltage.

[0047] The π-type filter circuit 101 is electrically connected to ...

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Abstract

The invention relates to the field of automotive electronics, and discloses vehicle-mounted equipment and a power supply pulse suppression circuit thereof. The power supply pulse suppression circuit comprises a bidirectional transient voltage suppression diode which is electrically connected between a positive electrode of an external voltage input and the ground and is used for bypassing a high-voltage pulse of which the voltage is greater than a breakdown voltage of the bidirectional transient voltage suppression diode to the ground; a pi type filter circuit is electrically connected to therear end of the bidirectional transient voltage suppression diode and is used for filtering the input voltage after high-voltage pulse suppression; and the voltage input end of a voltage stabilizing circuit is electrically connected to the rear end of the type filter circuit and is used for converting the input voltage into the output voltage with a preset voltage value.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to the field of vehicle tuning systems, and discloses a vehicle-mounted device and its power pulse suppression circuit. Background technique [0002] In the automotive electrical system, the electronic switch usually interferes with the car battery and electronic equipment, causing the output voltage of the vehicle level to be unstable, and the unstable peak voltage will damage the electronic equipment that is not protected against high-voltage pulses. Contents of the invention [0003] One of the objectives of the embodiments of the present invention is to provide a vehicle-mounted device and a power pulse suppression circuit thereof. [0004] In the first aspect, an embodiment of the present invention provides a power pulse suppression circuit, including: [0005] A bidirectional transient voltage suppression diode, electrically connected between the positive pole of the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R2430/00
Inventor 秦先清
Owner 广州市车厘子电子科技有限公司
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