| 摘要 |
FIELD: measurement technology. SUBSTANCE: digital ohmmeter includes controlling unit 2 connected to digital unit 1, null detector 17, first integrator composed of resistor 14, capacitor 15 and amplifier 16, power supply source 3 connected in series to reference 4 and measurement 5 resistors, second integrator composed of resistor 8, capacitor 10 and amplifier 11 which inputs are connected through keys 6, 7 to reference resistor 4. Output of second integrator is connected through keys 12, 13 to input of first integrator. EFFECT: simplified design thanks to exclusion of current stabilizer, diminished energy consumption and increased noise immunity. 1 dwgs
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