Floating measurement amplifier

Details Floating measurement amplifier Floating measurement amplifier

1975-01-16

1976-05-11

Grimm, Siegfried H.

Amplifiers

Modulator-demodulator-type amplifier

307261, 324118, H03F 338

Patent

active

039567079

ABSTRACT:
A floating measurement amplifier comprising an emitter and a receiver ferromagnetically coupled but totally separated from each other galvanically, the emitter comprising a modulator feeding the primary winding of a signal transformer and a feed device feeding the primary winding of a feed transformer, and the receiver comprising a demodulator, identical to the modulator controlling the feed of the secondary winding of the signal transformer and an oscillator connected to the secondary winding of the feed transformer, said modulator and demodulator being formed of transistors controlled by their bases, the modulator being connected to the primary winding of the signal transformer and, through a capacitor, to the primary winding of the feed transformer, and the demodulator being connected to the secondary winding of the signal transformer and, through a capacitor, to the secondary winding of said feed transformer.

REFERENCES:
patent: 3887877 (1975-06-01), Vosteen

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