Active free-running element

Details Active free-running element Active free-running element

1993-05-14

1995-07-04

Dougherty, Thomas M.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323271, G05F 144

Patent

active

054303664

ABSTRACT:
A switching regulator includes an inductive load. A monolithically integrated active free-running element includes an npn transistor switching the inductive load to generate a free-running current carried by the transistor. The transistor has a base terminal and collector and emitter terminals defining a collector-to-emitter voltage. A drive circuit has an output terminal connected to the base terminal of the transistor to trigger the transistor for operating the transistor largely into the saturation range, whenever the collector-to-emitter voltage of the transistor is positive.

REFERENCES:
patent: 3946251 (1976-03-01), Kawagoe
patent: 4038680 (1977-07-01), Yagi et al.
patent: 4392103 (1983-07-01), O'Sullivan et al.
patent: 4672303 (1987-06-01), Newton
patent: 4882532 (1989-11-01), Gariboldi et al.
patent: 5045770 (1991-09-01), Brooks
Publication: Halbleiter-Schaltungstechnik (Tietze & Schenk) 9th Ed., 1991, Chapter 18.6 pp. 563-571.

Affiliated with

Also associated with

Rating

Active free-running element does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-762691