Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1986-07-14
1988-02-02
Wan, Gene
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330273, 330271, H03F 345, H03F 326
Patent
active
047231114
ABSTRACT:
In an output amplifier (20) which is operated in class AB with the aid of quiescent-current means (40, 50) and which comprises first output-transistor configuration (T.sub.10 -T.sub.14) and a second output-transistor configuration (T.sub.15 -T.sub.17) with output transistors (T.sub.14, T.sub.17) of the same conductivity type, the drive signals for these output-transistor configurations are derived from the output signal (V.sub.i) of the input amplifier (10) by means of a single voltage-to-current converter (30). In the case of a positive drive of the first output transistor configuration (T.sub.10 -T.sub.14) this converter (30), together with the first output-transistor configuration (T.sub.10 -T.sub.14) and a load (R.sub.L) connected to the output (5) of the output amplifier (20), constitutes an amplifier configuration with full negative feedback, while in the case of a positive drive of the second output transistor configuration (T.sub.15 -T.sub.17) the converter (30) together with the second output transistor configuration (T.sub.15 -T.sub.17) and the load (R.sub. L) also constitutes an amplifier configuration with full negative feedback. As a result of this negative feedback non-linearity of the output transistors is reduced substantially, so that the output voltage (V.sub.O) accurately follows the input voltage (V.sub.i).
REFERENCES:
patent: 4476441 (1984-10-01), Gulczynski
van den Bungelaar Martinus J.
Verhoeven Bernardus
Briody Thomas A.
Gadson Gregory P.
Streeter William J.
U.S. Philips Corporation
Wan Gene
LandOfFree
Amplifier arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amplifier arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1637425