Electrical Amplifier


1,198,078. Transistor amplifiers. CAM. BRIDGE CONSULTANTS Ltd. 10 June, 1968 [10 June, 1967], No. 26900/67. Heading H3T. In a Class B push-pull amplifier, output transistors 9, 10 are driven by a stage 6, fed by a constant current transistor 7, power supply for the pre-amplifier stages 2, 4 being obtained from the output 14 e.g. via an integrator 16. Stage 2 has variable gain effected by means of feedback network 3, stage 6 also having feedback this being obtained from the output via network 17.




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