Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent
1978-03-07
1979-09-11
Dahl, Lawrence J.
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
330266, 330267, H03F 318
Patent
active
041677080
ABSTRACT:
A transistor amplifier comprises an input stage circuit and an output stage circuit direct-coupled to the input stage circuit: the input stage including complimentary paired transistors having bases commonly connected to an input terminal and emitters AC-wise grounded and further connected to constant current sources, respectively; the output stage being a single-ended push-pull amplifier circuit including complimentary paired transistors having bases connected to collectors of the input stage transistors, respectively, and emitters commonly connected to an output terminal. This transistor amplifier has advantages that it is simple in arrangement and that both its DC and AC operations are highly stabilized against variations in the ambient temperature and in the voltages of operating power supplies.
REFERENCES:
patent: 4015212 (1977-03-01), Miyata
Dahl Lawrence J.
Nippon Gakki Seizo Kabushiki Kaisha
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