JPS5929777U

JPS5929777U - Noise test equipment

Info

Publication number: JPS5929777U
Application number: JP12478982U
Authority: JP
Inventors: 大河内　隆夫
Original assignee: 日立建機株式会社
Priority date: 1982-08-18
Filing date: 1982-08-18
Publication date: 1984-02-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図および第２図は従来技術によるノイズ試験装置を
示し、第１図はその構成図、第２図はノイズ試験装置の
具体的回路図、第３図および第４図は本考案に係るノイ
ズ試験装置を示し、第３図はその具体的回路図、第４図
は誤動作信号とホールド信号の関係を示す線図である。１・・・ノイズ発生装置、２・・・被試験体、３．１２
゜１７・・・信号線、５・・・ノイズ電圧設定抵抗、６
・・・ノイズ電圧設定用つまみ、８・・・ノイズ発生器
、９・・・表示装置、１１・・・ホールド信号発生回路
、１３・・・電圧ホールド回路、１４・・・ブザー、１
５・・・信号停止スイッチ、１６・・・ａ換スイッチ。1 and 2 show a noise test device according to the prior art, FIG. 1 is its configuration diagram, FIG. 2 is a specific circuit diagram of the noise test device, and FIGS. 3 and 4 are according to the present invention. FIG. 3 is a detailed circuit diagram of the noise testing device, and FIG. 4 is a diagram showing the relationship between a malfunction signal and a hold signal. 1... Noise generator, 2... Test object, 3.12
゜17...Signal line, 5...Noise voltage setting resistor, 6
... Noise voltage setting knob, 8 ... Noise generator, 9 ... Display device, 11 ... Hold signal generation circuit, 13 ... Voltage hold circuit, 14 ... Buzzer, 1
5...Signal stop switch, 16...A exchange switch.

Claims

[Scope of utility model registration request]

(1) A noise test device in which a noise generator that generates desired electrical noise and a test object to which a noise test is performed by applying electrical noise from the noise generator are connected by a signal line. The noise generating device includes a noise voltage setting means for setting a voltage to be applied to the object under test, and a noise generator for generating electrical noise corresponding to the voltage set by the noise voltage setting means and inputting it to the object under test. means, a hold signal generating means for generating a hold signal in response to a malfunction signal output from the device under test when the device under test malfunctions due to electrical noise from the noise generating device, and the noise voltage. Voltage holding means for holding the set voltage at that point in time when a set voltage is always input from the setting means and a hold signal is input from the hold signal generating means;
A display device that displays the output from the voltage holding means as a noise voltage, and a hold signal from the hold signal generating means provided between the noise voltage setting means and the noise generating means to set the noise generating means. 1. A noise testing device comprising: switching means for switching voltage application to zero.

(2) The switching means is provided between the noise voltage setting resistor constituting the voltage setting means and the amplifier, and is configured to reduce the application of the set voltage to the noise generating means and the voltage holding means to zero. A noise testing device according to claim (1) of patent registration.

(3) A noise test as set forth in claim (1) of the utility model registration claim, further comprising a notification means activated by a hold signal from the hold signal generation means to notify that the test object has malfunctioned. Device.

(4) The noise testing device according to claim (1), wherein the signal generating means is provided with a signal stop switch for stopping the output of the hold signal from the hold signal generating means.