Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1990-09-21
1991-08-20
Wong, Peter S.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323908, 363 89, G05F 1565, G05F 1573
Patent
active
050417770
ABSTRACT:
A current supply arrangement includes a power transistor (T1) driven by a control transistor (T2). The power transistor switching path is connected between a terminal (UE+) of an unregulated input direct voltage (UE) and a terminal (UA+) of a regulated supply voltage (UA). A first control amplifier (OP1), drives the control transistor via a first electrode (base) thereof and compares a voltage derived from the supply voltage (UA) with a first reference voltage (Uref). A second control amplifier (OP2) compares a measuring voltage (UM) derived at a current measuring resistor (R10) with a second reference voltage. The voltage control and current regulation results in a system having a small number of elements and a sufficient dynamic control range.
The output of the second control amplifier (OP2) is connected to a second electrode emitter of the control transistor so that, the control transistor operates in emitter arrangement during active voltage regulation and operates in base arrangement during active current limitation.
REFERENCES:
patent: 3327201 (1967-06-01), Brantley, Jr.
patent: 3679961 (1972-07-01), Hamilton
patent: 3723774 (1973-03-01), Rogers
patent: 4019096 (1977-04-01), Bullinga
patent: 4176309 (1979-11-01), Schulz et al.
patent: 4254372 (1981-03-01), Moore, Jr.
patent: 4338646 (1982-07-01), Davis et al.
patent: 4346342 (1982-08-01), Carollo
patent: 4704572 (1987-11-01), Melbert
Franzblau Bernard
U.S. Philips Corporation
Wong Peter S.
LandOfFree
Voltage controlled and current limited power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voltage controlled and current limited power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage controlled and current limited power supply will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1010627