SU800898A1 - Device for testing and measuring resistance of contacts at low voltage levels - Google Patents
Device for testing and measuring resistance of contacts at low voltage levels Download PDFInfo
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- SU800898A1 SU800898A1 SU792741037A SU2741037A SU800898A1 SU 800898 A1 SU800898 A1 SU 800898A1 SU 792741037 A SU792741037 A SU 792741037A SU 2741037 A SU2741037 A SU 2741037A SU 800898 A1 SU800898 A1 SU 800898A1
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- source
- voltage
- resistance
- current
- operational amplifier
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- Measurement Of Resistance Or Impedance (AREA)
Description
(54) УСТРОЙСТВО ДЛЯ КОНТРОЛЯ И ИЗМЕРЕНИЯ СОПРОТИВЛЕНИЯ КОНТАКТОВ ПРИ НИЗКИХ УРОВНЯХ НАПРЯЖЕНИЯ(54) DEVICE FOR MONITORING AND MEASURING THE RESISTANCE OF CONTACTS AT LOW VOLTAGE LEVELS
1one
Изобретение относитс к электроизмерительной технике и может быть использовано при организации контрол параметров реле, в частности, величины сопротивлени контактной пары при низких уровн х напр жени .The invention relates to electrical measuring equipment and can be used in organizing monitoring of relay parameters, in particular, the resistance values of a contact pair at low voltage levels.
Известны устройства, содержащие источник питани , шунт, осциллограф де.литель напр жени , коммутатор, источник импульсов и датчик импульсов удвоенной частоты l.Devices are known that contain a power source, a shunt, an oscilloscope, a voltage de-coupling, a switch, a source of pulses, and a double-frequency pulse sensor l.
Недостаток этих устройств заключаетс в низкой точности измерени .The disadvantage of these devices is low measurement accuracy.
Наиболее близким к предлагаемому вл етс устройство дл контрол и измерени сопротивлени контактов при низких уровн х напр жени , содержащее источник питани , токоограничительный резистор, источник стабилизированного тока, блок управлени , измерительныйблок, источник опорного напр жени и транзистор 2 3.Closest to the present invention is a device for monitoring and measuring contact resistance at low voltage levels, comprising a power source, a current-limiting resistor, a stabilized current source, a control unit, a measuring unit, a reference voltage source, and a transistor 2 3.
Недостатком этого устройства вл етс то, что оно не обеспечивает возможности контрол сопротивлени контактов в динамическом режиме.A disadvantage of this device is that it does not provide the ability to control contact resistance in a dynamic mode.
Цель изобретени - обеспечение возможности контрол сопротивлени контактов в динамическом режиме.The purpose of the invention is to provide the ability to control the contact resistance in a dynamic mode.
Указанна цель достигаетс тем, ЧТОБ известное устройство, содержащее источник питани , один из полюсов которого соединен со входом источника стабилизированного тока, и источник опорного напр жени , введен источник заданного низкого уровн напр жени , резистивный делитель напр жени и операционный усилитель,This goal is achieved so that a known device containing a power source, one of the poles of which is connected to the input of a stabilized current source, and a reference voltage source, is supplied with a predetermined low voltage source, a resistive voltage divider and an operational amplifier,
причем выходы источника опорногоmoreover, the outputs of the reference source
напр жени соединены с соответствздащими входами источника стабилизированного тока, первый вход операционного усилител и соответствующийthe voltages are connected to the corresponding inputs of a stabilized current source, the first input of the operational amplifier and the corresponding
выход источника стабилизированного гока соединены со средним выводсм резистивного делител напр жени , включенного между соответствующим полюсом источника питани и общейthe output of the stabilized gok source is connected to the average terminal of a resistive voltage divider connected between the respective pole of the power source and the common
шиноП, выход операционного усилител соединей со вхо.цом источника опорного напр жени , а второй вход операционного усилител соединен с выходом источника заданного низкого уровн bus, the output of the operational amplifier of the connections with the input of the source of the reference voltage, and the second input of the operational amplifier is connected to the output of the source of the specified low level
напр жени , а контролируемый контакт включен между общей шиной устройства и среднем выводом резистивного делител напр жени .voltage, and a controlled contact is connected between the common bus of the device and the average output of a resistive voltage divider.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792741037A SU800898A1 (en) | 1979-03-26 | 1979-03-26 | Device for testing and measuring resistance of contacts at low voltage levels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792741037A SU800898A1 (en) | 1979-03-26 | 1979-03-26 | Device for testing and measuring resistance of contacts at low voltage levels |
Publications (1)
Publication Number | Publication Date |
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SU800898A1 true SU800898A1 (en) | 1981-01-30 |
Family
ID=20817080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792741037A SU800898A1 (en) | 1979-03-26 | 1979-03-26 | Device for testing and measuring resistance of contacts at low voltage levels |
Country Status (1)
Country | Link |
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SU (1) | SU800898A1 (en) |
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1979
- 1979-03-26 SU SU792741037A patent/SU800898A1/en active
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