Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1988-09-26
1989-08-01
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330253, 330269, 330273, H03F 326
Patent
active
048536458
ABSTRACT:
The first (T.sub.1) and the second (T.sub.2) output transistor of an amplifier arrangement are push-pull driven by means of a drive circuit (10) having two transistors (T.sub.11, T.sub.12) which are each loaded by a current source (T.sub.13, T.sub.14). Currents which are a measure of the currents flowing through the first (T.sub.1) and the second (T.sub.2) output transistor are generated by first (20) and second (30) current measuring means. These currents are applied to a negative feedback means (40) which controls the current intensity of the current sources (T.sub.13, T.sub.14) in such a way that the harmonic mean value of the currents flowing through the first (T.sub.1) and the second (T.sub.2) output transistor is substantially equal to a reference value.
REFERENCES:
patent: 4555676 (1985-11-01), van de Plassche et al.
patent: 4661781 (1987-04-01), Van Tuijl
patent: 4670720 (1987-06-01), Dijkmans
patent: 4723111 (1988-02-01), Verhoeven et al.
Buitendijk Pieter
De Jager Willem
Seevinck Evert
Mottola Steven
Rich Marianne R.
U.S. Philips Corporation
LandOfFree
Amplifier arrangement with quiescent current control 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 with quiescent current control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier arrangement with quiescent current control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-133878