Working point adjusting circuit for a power amplifier

Details Working point adjusting circuit for a power amplifier Working point adjusting circuit for a power amplifier

1990-09-25

1991-12-03

LaRoche, Eugene R.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330270, 330255, 330262, 330263, H03F 326

Patent

active

050703080

ABSTRACT:
A working point adjusting circuit for a power amplifier. When this simple circuit is connected into a Class B transistor power amplifier it adjusts the working point of the transistors in the output circuit of the power amplifier to the linear portion of the current-voltage characteristics of the transistor so the amplifier works in the level of a Class A amplifier. It provides many significant advantages including (1) much higher energy efficiency on output transistors; (2) much less signal distortion on loaded speakers; (3) simple circuitry for increased reliability; and (4) low component count for reduced costs.

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patent: 4454479 (1984-06-01), Spires
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patent: 4719431 (1988-01-01), Karsten
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