Audio power amplifier

Details Audio power amplifier Audio power amplifier

1992-10-15

1994-05-24

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including protection means

330279, 330289, H03F 152

Patent

active

053152689

ABSTRACT:
An amplifier comprising a power stage the output of which is compared with a reference level by a comparator. If the output exceeds the reference level, a reduction is made in the gain of a variable-gain cell upstream from the power stage. The reference level varies with temperature, and, more specifically, presents a high constant value (e.g., greater than the supply voltage) when temperature is below a predetermined threshold (e.g., 130.degree. C.), and decreases in proportion to an increase in temperature, when the temperature exceeds the predetermined threshold. Thus, the input signal is only attenuated in the event the output signal exceeds given values inversely proportional to temperature, and with no reduction in peak output at high temperature.

REFERENCES:
patent: 4122400 (1978-10-01), Medendorp et al.
patent: 4355341 (1982-10-01), Kaplan
patent: 4564879 (1986-01-01), Bienstman
patent: 4581589 (1986-04-01), Ikoma
patent: 4742312 (1988-05-01), Osburn et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1975664