DEVICE FOR MEASURING TRANSIENT INTERMODULATION DISTORTION OF AN ELECTRICAL SIGNAL Russian patent published in 2023 - IPC G01R23/20 

FIELD: electrical engineering.

SUBSTANCE: device for measuring transient intermodulation distortion of an electrical signal belongs to the field of instrumentation and is designed to detect and evaluate transient intermodulation distortion introduced by audio frequency signal amplifiers, in particular preamplifiers and power amplifiers, made in both discrete and integrated versions, and mixed techniques. The switching of the phase inverter is carried out by an introduced electronic switch, which includes two controlled electronic keys and an adjustable adder, the first electronic key is connected to the output of the phase inverter, and the second to the output of the first matching unit introduced at the input of the phase inverter, the signals from the outputs of the electronic keys are fed to the corresponding inputs of the adjustable adder, the output of which forms the output of the electronic switch and the output of the entire switched phase inverter, the operation of the electronic keys is controlled by the introduced control signal generation unit, which contains a series-connected second matching unit joined to the output of the phase inverter, a D-trigger, a third matching unit and a tunable programmable counter, output counter signal directly controls the operation of the first electronic switch, while the operation of the second electronic switch controls the output signal of the logic inverter connected to the output of the counter.

EFFECT: expanding the functionality of the unit.

1 cl, 2 dwg