Balanced filter circuit having a controllable balanced current m

Details Balanced filter circuit having a controllable balanced current m Balanced filter circuit having a controllable balanced current m

1990-09-19

1991-11-05

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

330107, H03F 3191

Patent

active

050633562

ABSTRACT:
A balanced filter circuit has a number of balanced pushpull amplifiers (10) whose inputs (11, 12) and outputs (13, 14) are coupled to filter resistors (20, 21, 22, 25, 27A/B) and filter capacitors (23, 24, 26A/B). In order to adjust the filter, the currents from the filter resistors to the inputs of the balanced amplifiers are varied by means of adjustable balanced multipliers (40).

REFERENCES:
patent: 4509019 (1985-04-01), Banu et al.
patent: 4780690 (1988-10-01), Voorman

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