Self-regulating drive circuit for the base current of a power tr

Details Self-regulating drive circuit for the base current of a power tr Self-regulating drive circuit for the base current of a power tr

1989-11-30

1991-01-22

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

307270, G05F 156

Patent

active

049873628

ABSTRACT:
An arrangement for controlling the base current of a power transistor comprising an adjustable driver stage which provides the drive power for switching on the power transistor at its base lead. A coupling diode is provided which taps off the voltage at the output of the power transistor. A saturation level control operates in parallel to the adjustable driver stage. A control current is supplied through a coupling diode when the voltage at the output of the power transistor signifies a system variable. The control current forms an auxiliary manipulated variable which adjusts the driver's output so as to supply the power transistor with exactly the right amount of drive power. The power transistor is thereby operated with the desired level of saturation, and particularly at the edge of saturation.

REFERENCES:
patent: 4564769 (1986-01-01), Melamed
patent: 4588904 (1986-05-01), Glogolja
patent: 4684879 (1987-08-01), Bredenkamp
patent: 4716513 (1987-12-01), Ito
patent: 4755741 (1988-05-01), Nelson
patent: 4864214 (1989-09-01), Billings et al.
Publication ELEKTRIE, Berlin 39 (1985) 5, p. 180.
"VI. Treiberstufen fuer schnelle Schalttransistoren", by Klaus Rischmueller, from the handbook Schalt-Transistoren, of Thomson-CSF, 1979, pp. 115-137.

Affiliated with

Also associated with

Rating

Self-regulating drive circuit for the base current of a power tr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-regulating drive circuit for the base current of a power tr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-regulating drive circuit for the base current of a power tr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1556776