H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/20
H03F 3/45 (2006.01) H03F 1/02 (2006.01) H03F 3/30 (2006.01)
Patent
CA 1149887
PHA 1045 17-12-1980 ABSTRACT. "Class "B" type amplifier." A Class "B" amplifier circuit in which Class "B" conversion takes place in a converter portion of the cir- cuit in combination with a differential amplifier input circuit, rather than in the output stage. The converter modulates the DC bias current supplied to the differential amplifier input circuit as a function of the input signal, in order to achieve Class "B" operation. The output ampli- fier portion of the circuit includes a pair of complemen- tary, series-connected transistors, each of which is con- nected in a common-emitter configuration. The disclosed circuit provides a high input impedance and excellent dynamic range.
368751
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
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