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DC power amplifier for interference simulator of vehicle electronic apparatus

A DC amplifier and DC power technology, which is applied in vehicle testing, machine/structural component testing, instruments, etc., can solve problems such as inflexible circuit function configuration, high cost, and protection functions that cannot meet the actual situation, and achieve obvious economical results. benefit effect

Inactive Publication Date: 2008-10-01
上海三基电子工业有限公司
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  • Description
  • Claims
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Problems solved by technology

[0003] At present, similar products are achieving the above design according to the requirements of the International Organization for Standardization (ISO) on ISO7637-2 "Road Vehicles - Electromagnetic Disturbances from Conduction and Coupling - Part 2: Electrical Transient Conducted Disturbances on Power Lines" (2004) In the vehicle-mounted electronic equipment interference simulation generator, it is generally composed of an independent signal generator and an independent power amplifier directly. In terms of signal processing and circuit function combination, there are problems of high cost and inflexible circuit function configuration. Especially when the power amplifier circuit encounters problems according to the test of vehicle electronic products, its protection function cannot meet the requirements of the actual situation

Method used

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  • DC power amplifier for interference simulator of vehicle electronic apparatus
  • DC power amplifier for interference simulator of vehicle electronic apparatus
  • DC power amplifier for interference simulator of vehicle electronic apparatus

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Referring to Fig. 1, this is a functional block diagram of the vehicle-mounted electronic interference simulator of the present invention.

[0014] As shown in the figure, the circuit composition and signal transmission are: the signal is input from the panel key control 6 to lead to the CPU control system 1, and then divided into two routes: one to the screen display 3, the other to the waveform generation 2, and the waveform generation 2 to the power amplifier 4 , the power amplifier 4 to the output to the tested product, and the protection circuit 7 to the power amplifier 4.

[0015] refer to figure 2 , which is the schematic diagram of the DC power amplifier circuit of the vehicle-mounted electronic interference simulator of the present invention.

[0016] As shown in the figure, the original small signal is generated by a microcomputer a...

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Abstract

A DC power amplifier of vehicle electronic device interference simulator consists of multistage amplification circuit including the first stage of operational amplification, the second stage of operational amplifier, the third stage of operational amplification and fourth stage of amplification; protective circuit being a VMOS grid double protection circuit; power output amplification circuit being power output amplification stage for outputting power up to 1500 watt.

Description

technical field [0001] The invention relates to a DC power amplifier circuit, more precisely a DC power amplifier circuit used for a vehicle-mounted electronic interference simulator, and belongs to the technical field of electronic DC power amplifiers. Background technique [0002] It is used for on-board electronic disturbance simulator and is a test instrument for automobile tests. According to the International Organization for Standardization (ISO) on ISO7637-2 "Road vehicles - Electromagnetic disturbances caused by conduction and coupling - Part 2: Electrical transients on power lines According to the requirements of the "conducted disturbance" (2004) standard, in the anti-interference test of the power supply of vehicle electronic equipment, two interference waveforms named P2b and P4 must be formed. The design of the amplifier circuit is more difficult. First of all, from the point of view of its amplification characteristics, the amplifying circuit belongs to a Cla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01M17/007
Inventor 陈银华
Owner 上海三基电子工业有限公司
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