Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1982-02-23
1984-09-25
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330261, 330273, H03F 345, H03F 326
Patent
active
044738048
ABSTRACT:
This application discloses a linear class B transconductance power amplifier suited for use in driving an inductive load, such as a convergence control coil for a color television receiver or video monitor. A preferred form of the amplifier includes a first pair of transistors having their emitters connected together and to a reference potential, their collectors being connected together and to a voltage source; and a second pair of transistors connected to the bases of the first pair of transistors and connected together in the form of a differential amplifier. The amplifier circuit operates as a noninverting operational amplifier when an input voltage has a positive polarity, and it operates as an inverting operational amplifier when the input voltage has a negative polarity. The amplifier circuit may also include an emitter follower stage for decreasing the source impedance of the driving circuit for the output amplifier transistors, an anti-saturation circuit for clamping the collector potential of the output transistors, and a current limit circuit for establishing a maximum current in the output transistors.
REFERENCES:
patent: 3437945 (1969-04-01), Duncan
patent: 3638130 (1972-01-01), Freeborn
patent: 3768031 (1973-10-01), Ring
Mullins James B.
Smith-Hill John
Tektronix Inc.
Wan G.
Winkelman John D.
LandOfFree
Linear class B transconductance power amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Linear class B transconductance power amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear class B transconductance power amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1771430