Constant-current source

Details Constant-current source Constant-current source

1992-07-23

1994-03-08

Stephan, Steven L.

Electricity: power supply or regulation systems

Self-regulating

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

323312, 323901, 323907, G05F 320

Patent

active

052931129

ABSTRACT:
A constant-current source including a constant-current output circuit for supplying a constant current provided with one or more transistors with the bases biased with the same base potential, a first circuit which provides a first current signal for setting the strength of the constant current to be delivered from the constant-current output circuit, a second circuit which generates a second current signal and provides the same base potential in response to the second current signal, a third circuit which controls the second current signal to minimize any deviation of the second current signal from the first current signal, and a DC power supply for energizing at least the first, second and third circuits. The improvement is that the transconductance of the first circuit which represents the ratio of a change in the first current signal to a change in the output voltage of the DC power supply is equal to the transconductance of the second circuit which represents the ratio of a change in the second current signal to a change in the output voltage of the DC power supply.

REFERENCES:
patent: 4051392 (1977-09-01), Rosenthal et al.
patent: 4618816 (1986-10-01), Monticelli
patent: 4833344 (1989-05-01), Moon et al.

Affiliated with

Also associated with

Rating

Constant-current source does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-156263