Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1994-05-16
1996-11-26
Nguyen, Matthew V.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323282, G05F 1577, G05F 140
Patent
active
055789161
ABSTRACT:
A voltage regulator is switchable between a lower regulated DC output voltage and a higher regulated DC output voltage. Foldback current limiting is actuated in response to the current drawn by the load when a current limiting threshold is exceeded. The current limiting threshold is determined by the voltage relationship at respective taps of a pair of voltage dividers, with said relationship being effected by the voltage appearing across a current sensing resistor coupled in series with the load. The current limiting threshold is adjusted to be approximately the same for both the lower and the higher regulated DC output voltages. This adjustment is accomplished with a non-linear voltage dependent device, which is coupled to one of the voltage dividers, and is actuated in the higher output voltage mode.
REFERENCES:
patent: 2832035 (1958-04-01), Bruck et al.
patent: 3109979 (1963-11-01), Faulkner et al.
patent: 3445751 (1969-05-01), Easter
patent: 4428015 (1984-01-01), Nesler
patent: 4988942 (1991-01-01), Ekstrand
patent: 5041777 (1991-08-01), Riedger
patent: 5126652 (1992-06-01), Carlin
patent: 5220271 (1993-06-01), Palczynski, Jr.
patent: 5220272 (1993-06-01), Nelson
patent: 5373225 (1994-12-01), Poletto et al.
patent: 5399958 (1995-03-01), Iyoda
patent: 5422562 (1995-06-01), Mammano et al.
Modern Electronic Circuits Reference Manual, John Markus, McGraw Hill, pp. 812 & 847 (1980).
Voltage Regulator Handbook, Feedback Current Limiting, National Semiconductor Corporation, Sanata Clara, CA 1975 pp. 7-10 to 7-19.
Power Supply Overload Protection Techniques, F. C. Easter RCA Engineer, Sep. 29, 1969.
Linear Applications, vol. 1, AN-21 to AN21-9, Designs for Negative Voltage Regulators.
National Semiconductor, LM104/LM204/LM304 Negative Regulator pp. 1-28 to 1-31.
Emanuel Peter M.
Nguyen Matthew V.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
Wein Frederick A.
LandOfFree
Dual voltage voltage regulator with foldback current limiting does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual voltage voltage regulator with foldback current limiting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual voltage voltage regulator with foldback current limiting will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1975669