DEVICE TO MEASURE RATIO OF ANALOG SIGNALS Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: device to measure ratio of analog signals has integrator 1 which output is connected to first input of comparator 2, operational amplifier 3 which noninverting input is linked to output of integrator 1 (its setting input is connected to output of amplifier 3 via analog key 5), control unit 4 which input is coupled to output of comparator 2, first output is connected to control input of key 5 and second output is coupled to output of device. Inputs of integrator 1 are linked to input terminals 6 and 7. Second inputs of amplifier 3 and comparator 2 are linked to input terminals 8 and 9 and form two differential inputs of device. EFFECT: simplified design, enhanced authenticity of measurements. 3 cl, 3 dwg