INDICATOR OF POLARITY, CURRENT TYPE AND CIRCUIT RESISTANCE Russian patent published in 1997 - IPC

Abstract RU 2076329 C1

FIELD: measurement technology. SUBSTANCE: invention can be used to indicate presence of constant or alternating voltage within range from 2.0 up to 400.0 V, circuit resistance from 0 up to 500.0 kOhm and for automatic determination of polarity of constant voltage source. Indicator has probes 1,2, resistors 3-10, switch 11, transistors 12-15, light-emitting diodes 16,17, diodes 18,19, power supply sources 20, 21 and test points 22-24. EFFECT: improved functional reliability. 1 dwg

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RU 2 076 329 C1

Authors

Birjukov Jurij Arkad'Evich

Dates

1997-03-27—Published

1992-08-13—Filed