External-power stage

Details External-power stage External-power stage

1988-09-15

1989-09-19

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

3581941, 315411, H02M 304, H02M 324

Patent

active

048686620

ABSTRACT:
An external-power stage suitable for use with television sets, for example. A transformer is provided with control circuits in both the primary side and the secondary side. Each of the control circuits have pulse-width modulators which provide pulses to an electronic switch. The control circuit on the primary side provides pulses to that switch of varying pulse width and of sufficient magnitude to maintain the television set in a standby mode. The control circuit in the secondary side of the transformer, on the other hand, comes into operation when the television set is turned on and provides pulses to the electronic switch while operating with the control circuit in the primary side for a predetermined period of time. Thereafter, the control circuit in the secondary side takes over the function of providing pulses to the electronic switch while the control circuit on the primary side is switched to an inoperative stage. The control circuit in the primary side is operative only in the standby mode, whereas the control circuit in the secondary side is operative during the normal mode of operation.

REFERENCES:
patent: 4727464 (1988-03-01), Hartmann et al.

Affiliated with

Also associated with

Rating

External-power stage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with External-power stage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and External-power stage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-373205