Voltage level detector for power amplifier protection control

Details Voltage level detector for power amplifier protection control Voltage level detector for power amplifier protection control

2006-04-18

2006-04-18

Smith, Zandra (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including protection means

C330S20700P, C330S051000

Reexamination Certificate

active

07030700

ABSTRACT:
A voltage level detector (8) activates itself through monitoring the voltage level (VSTB) at a standby pin (5) during power-up of an audio power amplifier (10), and can detect fault conditions of an output block (2). Upon detection of the (VSTB) reaching a first threshold level (Vth1) and a short to ground at the output terminal (3), the second short-to-ground detection block (81) activates a the second cutoff signal generating block (83). The recovery block (82) monitors the voltage level (VSTB) at the standby pin (5) during power-up. Upon detection of the voltage level (VSTB) reaching a second threshold level (Vth2>Vth1), the recovery block (82) deactivates the cutoff signal generating block (83). The cutoff signal generating block (83) sends a cutoff signal (Sc) to a protection switch block (71) as a request for turn-off of protection switches (7A) on activation, and on the other hand, terminal the sending of the cutoff signal (Sc) on deactivation.

REFERENCES:
patent: 3898532 (1975-08-01), Frank
patent: 4053996 (1977-10-01), Schertz et al.
patent: 4355341 (1982-10-01), Kaplan
patent: 4402029 (1983-08-01), Fujita
patent: 5543760 (1996-08-01), Honda et al.
patent: 5847610 (1998-12-01), Fujita
patent: 6-350349 (1994-12-01), None
patent: 6-350350 (1994-12-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3611217