DEVICE FOR TRANSFORMATION OF PARAMETERS OF VARIABLE- INDUCTION PICKUPS Russian patent published in 2005 - IPC

FIELD: measurement equipment.

SUBSTANCE: the device has a pulse generator, whose output is connected to the measuring and reference arms connected to the measuring and reference arms of the variable-induction pickup, circuit providing for separation of the pulse of mismatch between the durations of the transparent processes in the measuring and reference arms. The duration of the mismatch pulse is determined by the difference of the parameters of the inductance coils of the measuring and reference arms. Each arm of the pickup has an inductance coil, transistor and a capacitor. The transistor bases are connected to the output of the pulse generator. The signal ends of the inductance coils are connected to the transistor emitters and to the comparison inputs of the comparators. The other ends of the coils are connected to a common bus. Capacitors are cut in between the transistor collectors and emitters. The collectors of both transistors are connected to the voltage source.

EFFECT: enhanced sensitivity.

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