Gain control systems

Details Gain control systems Gain control systems

H - Electricity

03

G

330/29

H03G 3/30 (2006.01) H03G 1/00 (2006.01) H03G 1/04 (2006.01)

Patent

CA 1157536

ABSTRACT OF THE DISCLOSURE An improved gain control circuit is disclosed. The circuit is of the "eight transistors gain cell' type comprising amplifi- cation means disposed in each log-antilog transmission path of the cell of the gain control circuit for providing in each path signal gain as a function of the input signal to the circuit. THE improvements comprise (1) means for operating the circuit as a Class AB amplifier and (2) means for reducing the distortion component in the output signal due to the inherent parasitic base resistances of the transistors of the gain cell of the gain control circuit.

359031

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