Differential amplifier and current sensing circuit including suc

Details Differential amplifier and current sensing circuit including suc Differential amplifier and current sensing circuit including suc

1988-06-06

1989-12-05

Mullins, James B.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

323316, 330253, 330257, H03K 301, H03F 345

Patent

active

048854778

ABSTRACT:
A differential amplifier includes first and second matched field-effect transistors (FETs) (21,22) having their source electrodes connected together and to a current source (2), and their drain electrodes connected respectively to an input and an output of a current mirror circuit (3). The FETs (21,22) are depletion-mode FETs, and the current source comprises parallel-connected third and fourth depletion-mode FETs (25,26) matched to the first and second FETs (21,22). The current source (2) and current mirror (3) act to constrain the first and second FETs (21,22), to operate over a predetermined operating curve, for which they are optimally matched to one another. The differential amplifier may be constructed as an integrated circuit, and may form part of a circuit for sensing current in a power semiconductor device.

REFERENCES:
patent: 3947778 (1976-03-01), Hsiao et al.
patent: 4319181 (1982-03-01), Wrathall
patent: 4553084 (1985-11-01), Wrathall
K. Kurokawa et al., Investigations on Hybrid Computing Elements Using Integrated Circuits, 5th International Computation Meetings, Aug./Sep. 1967, pp. 135-140.

Affiliated with

Also associated with

Rating

Differential amplifier and current sensing circuit including suc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential amplifier and current sensing circuit including suc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential amplifier and current sensing circuit including suc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2036126