Circuit protection arrangement

Details Circuit protection arrangement Circuit protection arrangement

1991-10-11

1994-06-07

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 71, 361 18, 361100, H02H 300

Patent

active

053195159

ABSTRACT:
A number of arrangements for protecting an electrical circuit from an electrical overcurrent are disclosed. In the arrangements the base or gate of a switching transistor (4, 101, 161, 222, 401) is held in a voltage divider, one arm of which comprises a control transistor (6, 102, 162, 222, 404) whose base or gate is itself held in a voltage divider. When an overcurrent is experienced the control transistor switches on causing the switching transistor to turn off. The arrangement may include a shunt switching circuit to shunt the overcurrent across the load. It may include a resetting circuit that will attempt to reset the switching circuit after the overcurrent has been experienced. In one embodiment the arrangement includes means such as a battery, dc--dc voltage converter or Seebeck device in order to reduce or eliminate any initial voltage drop across the switching circuit.

REFERENCES:
patent: 3617655 (1971-11-01), Fischer
patent: 3801872 (1974-04-01), Zocholl et al.
patent: 3916220 (1975-10-01), Roveti
patent: 4110809 (1978-08-01), Cronin
patent: 4202023 (1980-05-01), Sears
patent: 4241372 (1980-12-01), Sears
patent: 4423457 (1983-12-01), Brajder
patent: 4513343 (1985-04-01), Ryczek
patent: 4533970 (1985-08-01), Brown
patent: 4536699 (1985-08-01), Baker
patent: 4594633 (1986-06-01), Townsend et al.
patent: 4604674 (1986-08-01), Hamel
patent: 4736268 (1988-04-01), Wagoner
patent: 4744369 (1988-05-01), Kroll
patent: 4771357 (1988-09-01), Lorinez et al.
patent: 4799126 (1989-01-01), Kruse et al.
patent: 4811156 (1989-03-01), Kroll
patent: 4835649 (1989-05-01), Salerno
patent: 4853820 (1989-08-01), Ham, Jr. et al.
patent: 4937697 (1990-06-01), Edwards et al.
"Various Types of Power Supply Protection Circuits", Switching Power Supply Units, Chapter 8, (pp. 209-229).
"Using UC3840 in Designing a Switching Power Supply", Collection of Transistor Circuit Manufacturing, pp. 150-161.
"Switching Mode Power Supply", pp. 52-62.
British Search Report, Application No. 9022236.5, Jan. 25, 1991.
British Search Report, Application No. 9022237.3, Jan. 25, 1991.
British Search Report, Application No. 9022261.3, Jan. 25, 1991.
British Search Report, Application No. 9027111.5, Mar. 26, 1991.
British Search Report, Application No. 9100283.2, May 28, 1991.
British Search Report, Application No. 9120727.4, Dec. 5, 1991.
International Search Report, Application No. PCT/GB91/01760, filed Oct. 10, 1991.
International Search Report, Application No. PCT/GB91/01761, filed Oct. 10, 1991.
International Search Report, Application No. PCT/GB91/02215, filed Dec. 12, 1991.
International Search Report, Application No. PCT/GB92/00027, filed Jan. 7, 1992.
Siemens-Bauteile Informationen/Horst von Pelka, vol. 4, #6, 1968, Munchen DE, pp. 106-109.
Siemens Fachbucher, Circuits with Semiconductor Components, vol. 4, pp. 199-202, Erich Gelder & Walter Hirschmann.

Affiliated with

Also associated with

Rating

Circuit protection arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-797655