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1. (WO1991018338) SWITCHABLE CURRENT SOURCE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018338 International Application No.: PCT/US1990/005896
Publication Date: 28.11.1991 International Filing Date: 15.10.1990
IPC:
G05F 3/26 (2006.01) ,G11C 7/06 (2006.01) ,G11C 7/10 (2006.01) ,G11C 8/06 (2006.01) ,H03K 17/041 (2006.01) ,H03K 17/567 (2006.01) ,H03K 17/687 (2006.01)
G PHYSICS
05
CONTROLLING; REGULATING
F
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
3
Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
02
Regulating voltage or current
08
wherein the variable is dc
10
using uncontrolled devices with non-linear characteristics
16
being semiconductor devices
20
using diode-transistor combinations
26
Current mirrors
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
7
Arrangements for writing information into, or reading information out from, a digital store
06
Sense amplifiers; Associated circuits
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
7
Arrangements for writing information into, or reading information out from, a digital store
10
Input/output (I/O) data interface arrangements, e.g. I/O data control circuits, I/O data buffers
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
8
Arrangements for selecting an address in a digital store
06
Address interface arrangements, e.g. address buffers
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
17
Electronic switching or gating, i.e. not by contact-making and -breaking
04
Modifications for accelerating switching
041
without feedback from the output circuit to the control circuit
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
17
Electronic switching or gating, i.e. not by contact-making and -breaking
51
characterised by the use of specified components
56
by the use, as active elements, of semiconductor devices
567
Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
17
Electronic switching or gating, i.e. not by contact-making and -breaking
51
characterised by the use of specified components
56
by the use, as active elements, of semiconductor devices
687
the devices being field-effect transistors
Applicants:
INTERNATIONAL BUSINESS MACHINES CORPORATION [US/US]; Armonk, NY 10504, US
Inventors:
DAWSON, James, William; US
HUOTT, William, Vincent; US
PHILLIPS, Panagiotis, Andrew; US
Agent:
MELLER, Michael, N.; Meller & Associates P.O. Box 2198 Grand Central Station New York, NY 10163, US
Priority Data:
525,42217.05.1990US
Title (EN) SWITCHABLE CURRENT SOURCE
(FR) SOURCE DE COURANT POUVANT ETRE COMMUTEE
Abstract:
(EN) A switchable current source is disclosed which permits switching of both the load current and the reference current of a current mirror simultaneously by means of a separate switching device. The switching device need not carry the entire load or reference current. The circuit saves all of the current during switch-off.
(FR) On décrit une source de courant pouvant être commutée et qui permet la commutation simultanée à la fois du courant de charge et du courant de référence d'un miroir de courant par l'intermédiaire d'un dispositif de commutation séparé. Le dispositif de commutation ne doit pas nécessairement porter tout le courant de charge ou de référence. Le circuit économise ainsi tout le courant lors de son interruption.
Designated States: JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)