Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1993-07-22
1995-06-06
Stephan, Steven L.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323313, 323315, G05F 308
Patent
active
054225639
ABSTRACT:
A bootstrap current reference circuit having an n-type negative resistance network, and a biasing device responsive to operating current of the n-type negative resistance network for biasing the network to operate as a current source at an operating point substantially in a region of a predetermined current peak associated with the n-type negative resistance network. In one embodiment the circuit includes a depletion-mode FET (DFET) and a stable trimmed n-type negative resistance device (ST-NNRD) connected in series with the source of the DFET. The gate of the DFET is feedback coupled to the output of the ST-NNRD so as to bias it in a region of operation in which it exhibits a large incremental resistance, thus bootstrapping the circuit to operate in a state substantially independent of fluctuations associated with supply voltage source. In an alternate embodiment, the circuit includes a ST-NNRD connected in series with the source terminal of a DFET. The DFET is one side of a current mirror with a second DFET, the current mirror being terminated by an impedance providing level matching and monostable loading of the ST-RTD.
REFERENCES:
patent: 4242595 (1980-12-01), Lehovec
patent: 4686449 (1987-08-01), Jeffrey et al.
patent: 4686451 (1987-08-01), Li et al.
patent: 4760284 (1988-07-01), Taylor
patent: 4868416 (1989-09-01), Fitzpatrick et al.
patent: 4948989 (1990-08-01), Spratt
patent: 4954769 (1990-09-01), Kalthoff
patent: 5008565 (1991-04-01), Taylor
patent: 5065043 (1991-11-01), Bartling
patent: 5099191 (1992-03-01), Galler et al.
patent: 5281871 (1994-01-01), Mori et al.
Yang, H. C. and D. J. Allstot, "Improved Self-Boot-Strapped Gain Enhancement Technique For GaAs Amplifiers", Electronics Letters, vol. 24, No. 17, Aug. 18, 1988, pp. 1101-1102.
Berhane Adolf
Massachusetts Institute of Technology
Stephan Steven L.
LandOfFree
Bootstrapped current and voltage reference circuits utilizing an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bootstrapped current and voltage reference circuits utilizing an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bootstrapped current and voltage reference circuits utilizing an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-989884