Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent
1979-02-05
1980-10-14
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
330288, 330296, 330311, H03F 330
Patent
active
042284040
ABSTRACT:
An integrated circuit gain block is obtained by cascading a common collector stage with a complementary common emitter stage. The current density of the common emitter transistor is made sufficiently greater than that of the common collector transistor so that the common emitter V.sub.BE lowest worst case value is higher than the common collector V.sub.BE highest worst case value. This makes the circuit manufacturable in integrated circuit form and permits the circuit to operate from a single power supply potential that can be as low as the series combination of one V.sub.BE added to one transistor collector to emitter saturation voltage. The circuit has a high current gain and is amenable to incorporation into current boosted class B amplifier output stages.
REFERENCES:
Edwards, "Playmaster 143", Electronics Australia, Oct. 1974, pp. 76, 77, 79-81, 83.
Mullins James B.
National Semiconductor Corporation
Woodward Gail W.
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