Analog circuit for simulating a digitally controlled rheostat

Details Analog circuit for simulating a digitally controlled rheostat Analog circuit for simulating a digitally controlled rheostat

1984-04-04

1987-02-17

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307264, 307493, 333 81R, H03K 502

Patent

active

046441930

ABSTRACT:
The simulation of a two-wire rheostat is accomplished by an analog output circuit whose value is digitally controlled. It comprises a four-quadrant multiplying digital to analog converter (MDAC) and a current booster including active elements in the feedback loop of an amplifier. The digital rheostat acts as a variable resistance whose value is controlled by a digital controller and can accommodate either AC or DC excitations. The unit forms a negative feedback loop containing only solid-state devices and relies on fixed resistors for accuracy.

REFERENCES:
patent: 3209266 (1965-09-01), White
patent: 3445681 (1969-05-01), Cattermole et al.
patent: 3947701 (1976-03-01), Russell, Jr.
patent: 4168528 (1979-09-01), Comer
patent: 4220875 (1982-09-01), Lawton
patent: 4276604 (1981-06-01), Kitamura et al.
patent: 4288707 (1981-09-01), Katakura
patent: 4338531 (1982-07-01), Corso
patent: 4408514 (1983-10-01), Suzuki

Affiliated with

Also associated with

Rating

Analog circuit for simulating a digitally controlled rheostat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analog circuit for simulating a digitally controlled rheostat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog circuit for simulating a digitally controlled rheostat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1939125