H - Electricity – 03 – F
Patent
H - Electricity
03
F
328/95
H03F 1/34 (2006.01) H03B 28/00 (2006.01)
Patent
CA 1271233
DRIVER CIRCUIT ABSTRACT A driver circuit for applying a first signal having a desired have form, frequency and peak to peak voltage to a coaxial transmission line which also has applied to it a second signal having a substantially higher frequency. An operational amplifier has the first signal applied to its noninverting input terminal. The output of the operational amplifier is applied across the primary winding of a driver coupling transformer through an inductor which provides high impedence to the second signal. The voltages induced in the secondary winding of the driver transformer are applied to the transmission line. The primary winding of a feedback transformer is connected in parallel with the secondary winding of the driver transformer. The voltage induced in the secondary winding in the feedback transformer are applied by a feedback circuit including an R.C. filter to the inverting input terminal of the operational amplifier. The signal applied to the invrting input terminal includes both an A.C. component and a D. C. component, which components cause the output current of the operational amplifier to induce in the secondary winding of the driver transformer a signal, the wave form, frequency and peak to peak voltage of which substantially equal those of the first signal applied to the noninverting input terminal the operational amplifier.
495729
Honeywell Inc.
Smart & Biggar
Spiesman Robert L.
LandOfFree
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