Current reference for feedback current source

Details Current reference for feedback current source Current reference for feedback current source

1987-06-01

1988-04-19

Beha, Jr., William H.

Electricity: power supply or regulation systems

Output level responsive

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

323316, G05F 1575, G05F 326

Patent

active

047392460

ABSTRACT:
A Current Reference for providing a feedback signal to a current driver in a current-series, feedback-controlled current source circuit that includes at least one, but more likely more than one, controlled current source. The Current Reference comprises a current mirror having an input transistor coupled to an output transistor in a current mirror configuration. The input transistor of the current mirror is driven by a constant current source, Icc, so that the current mirror output transistor causes a current substantially equal to Icc to flow out of a summing node. A sensing transistor is coupled to a controlled current source for providing a current into the summing node that is representative of the current delivered by the controlled current source. As a result, the current flowing away from the summing node and into a phase inverter is representative of the difference between the delivered current and Icc. The output of the phase inverter is coupled to the current driver so as to maintain the magnitude of the delivered current at the intended value.

REFERENCES:
patent: 3962592 (1976-06-01), Thommen et al.
patent: 4329639 (1982-05-01), Davis
patent: 4435678 (1984-03-01), Joseph et al.
patent: 4500831 (1985-02-01), Akram
patent: 4528496 (1985-07-01), Naokawa et al.

Affiliated with

Also associated with

Rating

Current reference for feedback 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 Current reference for feedback current source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current reference for feedback current source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2177986