SU119270A1 - The method for determining the differential slope of the current-voltage characteristic of a semiconductor rectifier and a device for implementing this method - Google Patents
The method for determining the differential slope of the current-voltage characteristic of a semiconductor rectifier and a device for implementing this methodInfo
- Publication number
- SU119270A1 SU119270A1 SU604183A SU604183A SU119270A1 SU 119270 A1 SU119270 A1 SU 119270A1 SU 604183 A SU604183 A SU 604183A SU 604183 A SU604183 A SU 604183A SU 119270 A1 SU119270 A1 SU 119270A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- determining
- current
- implementing
- voltage characteristic
- semiconductor rectifier
- Prior art date
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- Testing Of Individual Semiconductor Devices (AREA)
Description
Предлагаетс способ определени дифференциальной крутизны вольтамперной характеристики полупроводникового выпр мител в динамическом работы и устройство дл осуществлени этого способа.A method for determining the differential slope of a current-voltage characteristic of a semiconductor rectifier in dynamic operation and a device for implementing this method are proposed.
Известные способы подобного рода обладают р дом недостатков. При определении крутизны внешней характеристики выпр мител по малым прирагцени м тока и напр жени при включении выпр мител в цепь посто нного тока режим его работы сильно отличаетс от реальных условий работы на переменном токе, что значительно искажает результаты измерений.Known methods of this kind have a number of disadvantages. When determining the steepness of the external characteristic of the rectifier for small current and voltage factors when the rectifier is switched on in the DC circuit, its mode of operation differs greatly from the actual operating conditions on the alternating current, which greatly distorts the measurement results.
Другой известный способ определени крутизны внешней характеристики по наклону ее изображени на градуированном экране характериографа имеет низкую точность и не позво.л ет проводить измерени с большой скоростью.Another well-known method for determining the steepness of an external characteristic based on the slope of its image on a graduated screen of a characterograph has low accuracy and does not allow measurements to be made at high speed.
Дл устранени указанных недостатков и повышени точности измерепий предлагаетс периодически уменьшать ток нагрузки выпр мител на короткое врем (в 100 и более раз меньшее, чем длительность периода из.менени нагрузки) и измер ть разность максимальных значений падепи напр жени на исследуемом выпр мителе при номинальной и уменьшенной нагрузках прибором, градуированным непосредственно в значени х крутизны.To eliminate these drawbacks and improve the accuracy of measurements, it is proposed to periodically reduce the load current of the rectifier for a short time (100 or more times shorter than the duration of the period of changing the load) and measure the difference between the maximum values of the voltage across the test rectifier at rated and reduced loads by the instrument, graded directly to the values of the slope.
Устройство дл осуществлени предлагаемого способа (см. схему) состоит из автоматического переключател / и двух конденсаторов 2, поочередно подключаемых к исследуемому выпр мителю 3 через соотгетствующие диоды 4. Конденсаторы 2 зар жаютс до максимальных значений напр жени на исследуемом выпр мителе 3 при номинальной п пониженной нагрузках. Разность указанных напр жений измер етс дифференциальным ламповым вольтметром 5. Выпр митель 3 питаетс от источника питани 6, а переключатель /-от блока коммутации 7.The device for carrying out the proposed method (see diagram) consists of an automatic switch / and two capacitors 2, alternately connected to the test rectifier 3 through appropriate diodes 4. The capacitors 2 are charged to the maximum voltage values of the test rectifier 3 at nominal and low loads. The difference between these voltages is measured by a differential lamp voltmeter 5. Rectifier 3 is powered from the power source 6, and the switch / is from the switching unit 7.
При испытани х производитс непосредственное измерение с помощью вольтметра 5 разности максимальных значений пр мого паIn tests, a direct measurement is made using a voltmeter 5 between the differences in the maximum values of the direct voltage
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU604183A SU119270A1 (en) | 1958-07-17 | 1958-07-17 | The method for determining the differential slope of the current-voltage characteristic of a semiconductor rectifier and a device for implementing this method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU604183A SU119270A1 (en) | 1958-07-17 | 1958-07-17 | The method for determining the differential slope of the current-voltage characteristic of a semiconductor rectifier and a device for implementing this method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU119270A1 true SU119270A1 (en) | 1958-11-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU604183A SU119270A1 (en) | 1958-07-17 | 1958-07-17 | The method for determining the differential slope of the current-voltage characteristic of a semiconductor rectifier and a device for implementing this method |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU119270A1 (en) |
-
1958
- 1958-07-17 SU SU604183A patent/SU119270A1/en active
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