Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent
1991-10-28
1993-04-06
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
330297, H03F 330
Patent
active
052007111
ABSTRACT:
In a push-pull-connected final stage (111) of an audio amplifier, its two supply poles (117, 118) are supplied by low-impedance current sources, the voltages of which comprise, in principle, a constant positive voltage and a constant negative voltage superimposed by the input signal to the final stage. Each of these voltages is obtained by a respective pulse-width modulated amplifier (103, 104) coacting with lowpass filter circuits (109, 110) and recovery diodes (107, 108). Distortion factors which are thirty times better than the distortion factors obtained with conventional class D-amplifiers with pulse-width modulation can be achieved.
REFERENCES:
patent: 4054843 (1977-10-01), Hamada
patent: 4087759 (1978-05-01), Iwamatsu
patent: 4472687 (1984-09-01), Kashiwagi et al.
Andersson Kenneth
Bavholm Dan
AB Lab. Gruppen Andersson & Bavholm
Mullins James B.
LandOfFree
Pulse-width modulated, linear audio-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 Pulse-width modulated, linear audio-power amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse-width modulated, linear audio-power amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-539449