Фазометр

Abstract

The proposed phase meter contains two differentiators, two amplitude-limiting amplifiers, two triggers, two phase detectors, an AND logic element, a phase inverter, a transistor bridge circuit, a two-channel analog-to-digital converter, a microprocessor computing unit, a read-only memory unit, a digital-to-analog converter, a displaying unit, two pulse-width converters, a gating unit, a gating signal former, a pulse-frequency converter, and additionally, two adders. The transistor bridge circuit is inserted between the output of the first trigger, via a resistor, and the common point of the circuit of the phase meter via a capacitor. The inputs of the differentiators are accordingly connected to the inputs of the phase meter, and the outputs are connected to the inputs of the amplifiers. The outputs of the amplifiers are accordingly connected to the inputs of the first trigger. The inputs of the phase detectors are accordingly connected to the outputs of the amplifiers, and the outputs are connected to the inputs of the AND logic element. The output of the AND logic element is connected to the control inputs of the bridge circuit via the second trigger and the phase inverter. The output of the analog-to-digital converter is connected to the first input of the computing unit. The output of the computing unit is connected to the input of the memory unit and the input of the digital-to-analog converter. The output of the digital-to-analog converter is connected to the second input of the displaying unit. The first input of the displaying unit is connected to the common point of the circuit of the phase meter. The inputs of the pulse-width converters are accordingly connected to the outputs of the phase detectors, and the outputs are connected to the inputs of the analog-to-digital converter. The first input of the gating unit is connected to the output of the first amplifier, and the second input is connected to the output of the second phase detector via the gating signal former. The input of the pulse-frequency converter is connected to the output of the gating unit, and two outputs are accordingly connected to the inputs of the analog-to-digital converter. The first inputs of the adders are accordingly connected to the outputs of the differentiators, and the second inputs are accordingly connected to the inputs of the differentiators. The outputs of the adders are accordingly connected to the inputs of the amplifiers.