Current source having saturation protection

Details Current source having saturation protection Current source having saturation protection

1979-09-28

1982-08-17

Larkins, William D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307299B, 357 35, 357 36, H03F 318, H01L 2972

Patent

active

043451667

ABSTRACT:
A circuit is disclosed for providing multiple output currents having magnitudes which are of a predetermined ratio of the magnitude of an input current. The circuit includes an input transistor and at least two output transistors. The emitters and bases of the input and two output transistors are connected in common with the emitters thereof being connected to a terminal at which is supplied a source of operating potential. The collectors are respectively coupled to individual utilization means. First and second additional transistors are provided having symmetrical structures with the bases thereof being connected to the bases of the output transistors and their emitters connected to the collector of the first output transistor. The collectors of the two output transistors are connected respectively to the collector of the input transistor and the collector of the second output transistor whereby all of any saturation current produced by the first output transistor becoming saturated is equally conducted between the two additional transistors to maintain the ratio of input and output currents.

REFERENCES:
patent: 3579059 (1971-05-01), Widlar
patent: 3810006 (1974-05-01), Vittoz
patent: 3820007 (1974-06-01), Schilling et al.
patent: 3829718 (1974-08-01), Hart
patent: 3878551 (1975-04-01), Callahan, Jr.
patent: 3958267 (1976-05-01), Frederiksen et al.
patent: 3987477 (1976-10-01), Krolik
patent: 4153909 (1979-05-01), Dobkin
Motorola Semiconductor Data Library, vol. 6, Series B, pp. 3-163 (Motorola, Inc., Phoenix, Ariz., 1976).

Affiliated with

Also associated with

Rating

Current source having saturation protection does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-188471