Transformerless current balanced amplifier

Details Transformerless current balanced amplifier Transformerless current balanced amplifier

1984-06-15

1986-04-29

LaRoche, Eugene R.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330253, 330300, H03F 345, H03F 316

Patent

active

045860009

ABSTRACT:
A current balanced linear amplifier which does not contain a transformer. A differential transistor pair (22, 32) forms the amplifying element, with at least one transistor (22 or 32) having an input signal (71, 72) applied to its base. A current sink (52) sinking a fixed value of current (I) is coupled to the commonly-coupled emitters of the transistor pair (22, 32). Coupled to the collector of each amplifying transistor (22, 32) is a self-biasing constant current source (2, 12) which produces a fixed amount of current (I/2) equal to one half the current (I) sunk by the current sink (52). Each self-biasing constant current source (2, 12) comprises a field effect transistor (2, 12) having a capacitor (6, 16) connected between the gate G and source S of the FET (2, 12) in a positive feedback arrangement. The balanced current output (61, 62) is taken from the collectors of each of the two amplifying transistors (22, 32).

REFERENCES:
patent: 3435362 (1969-03-01), Pamlenyi
patent: 3676789 (1972-07-01), Bray
patent: 4405900 (1983-09-01), van de Plassche
Microwave Filters and Circuits (Academic Press, 1970), pp. 299-300.

Affiliated with

Also associated with

Rating

Transformerless current balanced 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 Transformerless current balanced amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transformerless current balanced amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-143255