Method for electrical and thermal protection of output devices o

Details Method for electrical and thermal protection of output devices o Method for electrical and thermal protection of output devices o

1982-05-03

1984-07-03

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361106, 330207P, H02H 328, H02H 720

Patent

active

044582846

ABSTRACT:
Apparatus for electronically protecting output transistors of electronic amplifiers against thermal overload, overcurrent, overvoltage, and second breakdown mechanism. An analog multiplier circuit, together with a novel circuitry for deriving the instantaneous voltages across, and the currents through, each of the output transistors, is used to obtain the instantaneous power dissipation in the transistors. A thermal sensor, the electrical signal of which is used as an additional variable in the multiplication, yields the thermal derating necessary for the transistors, and an integrating time constant used to weigh the output signal of the multiplier, takes into account the time derating of the transistors.

REFERENCES:
patent: 3792316 (1974-02-01), Bondini et al.
patent: 3961173 (1976-06-01), Perry et al.
patent: 4330809 (1982-05-01), Stanley
patent: 4355341 (1982-10-01), Kaplan

Affiliated with

Also associated with

Rating

Method for electrical and thermal protection of output devices o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for electrical and thermal protection of output devices o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for electrical and thermal protection of output devices o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1633344