Patents
Patents for G05F 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 (12,739)
09/1994
09/15/1994DE4329866C1 Current mirror
09/14/1994EP0615182A2 Reference current generating circuit
09/14/1994EP0553220B1 Device for establishing a current in an analogue part of an integrated logic and analogue circuit
09/13/1994US5347492 Semiconductor integrated circuit device
09/13/1994US5347210 Current switch with bipolar switching transistor and β compensating circuit
09/13/1994US5347197 Display device having a display tube including a cold cathode and a current mirror drive circuit for the cold cathode
09/13/1994US5347172 Oscillatorless substrate bias generator
09/13/1994US5347171 Efficient negative charge pump
09/13/1994US5347170 Semiconductor integrated circuit having a voltage stepdown mechanism
09/06/1994US5345192 Voltage controlled integrated circuit for biasing an RF device
09/06/1994US5345166 Regulated voltage two-wire detector
08/1994
08/31/1994EP0613236A1 Device for operating an electromotor drive of a refrigerating unit for electrical installation cabinets
08/31/1994EP0613072A1 Integrated circuit comprising a cascode current mirror
08/30/1994US5343088 Charge pump circuit for a substrate voltage generator of a semiconductor memory device
08/30/1994US5343087 Semiconductor device having a substrate bias generator
08/30/1994US5343034 Bias circuit for photodiode having level shift circuitry
08/30/1994US5342799 Substrate slew circuit process
08/24/1994CN2175432Y Maximum power switch regulated power supply
08/23/1994US5341109 Current mirror circuit
08/23/1994US5341086 Constant-current circuit for light-emitting element
08/23/1994US5341035 Substrate potential generator
08/18/1994DE4315298C1 Circuit arrangement for generating two complimentary signals
08/17/1994EP0611105A2 Current source
08/17/1994EP0610939A1 Voltage drop circuit to be built in semiconductor IC chip
08/17/1994EP0610430A1 Analog-to-digital converter and method of fabrication
08/16/1994US5339272 Precision voltage reference
08/16/1994US5339045 Comparator start-up arrangement
08/16/1994US5339020 Voltage regulating integrated circuit
08/16/1994US5339019 Current sink
08/10/1994EP0610064A2 Transistor switching
08/10/1994EP0609497A2 A device and method for maintaining a high voltage for low power applications
08/09/1994US5337284 High voltage generator having a self-timed clock circuit and charge pump, and a method therefor
08/09/1994US5337021 High density integrated circuit with high output impedance
08/09/1994US5336986 Voltage regulator for field programmable gate arrays
08/03/1994EP0609053A2 Voltage controlled integrated circuit for biasing an RF device
08/03/1994EP0609009A2 Dual gate JFET circuit to control threshold voltage
08/03/1994EP0608974A2 Base current-control circuit of an output transistor
08/03/1994EP0608694A2 Integratable current source circuit
08/02/1994US5334929 Circuit for providing a current proportional to absolute temperature
07/1994
07/27/1994EP0608151A2 A high speed and low drift charge pump circuit
07/27/1994EP0607789A1 Circuit for generating an output signal exponentially depending on the input signal
07/26/1994US5332928 Battery drain reducer
07/26/1994CA2052248C Constant current circuit and an oscillating circuit controlled by the same
07/20/1994EP0606888A2 Communication line driver, LSI for interface including such a circuit and communication terminal apparatus
07/19/1994US5331599 Dynamically switchable reference voltage generator
07/14/1994DE4300592A1 Output current limiter for electronic circuit
07/13/1994EP0606123A1 Electrical circuit arrangement
07/12/1994US5329247 Switchable MOS current mirror
07/12/1994US5329169 Voltage dropping circuit for semiconductor device
07/05/1994US5327072 Regulating circuit for a substrate bias voltage generator
07/05/1994US5327028 Voltage reference circuit with breakpoint compensation
06/1994
06/28/1994US5325045 Low voltage CMOS bandgap with new trimming and curvature correction methods
06/23/1994WO1994014110A1 Battery drain reducer
06/23/1994DE4315299C1 Current source device for D=A converter
06/23/1994CA2150226A1 Battery drain reducer
06/22/1994EP0602699A2 Current limited power semiconductor device
06/22/1994EP0602355A1 Fuse programmable voltage down converter
06/22/1994EP0602197A1 Integrated cmos semiconductor circuit
06/21/1994US5323354 Semiconductor memory device including arrangements to facilitate battery backup
06/21/1994US5323124 Amplifier including current mirror circuit and current generator
06/15/1994EP0601540A1 Reference voltage generator of a band-gap regulator type used in CMOS transistor circuit
06/08/1994EP0600003A1 Method for temperature-compensating zener diodes having either positive or negative temperature coefficients
06/07/1994US5319256 Semiconductor device for generating constant potential
06/07/1994US5319252 Load programmable output buffer
06/01/1994EP0599593A2 Full wave rectifier using current mirror bridge
06/01/1994EP0458798B1 Current control circuit
05/1994
05/31/1994US5317208 Integrated circuit employing inverse transistors
05/25/1994EP0598147A1 Current generating circuit
05/24/1994US5315230 Temperature compensated voltage reference for low and wide voltage ranges
05/24/1994US5315166 Substrate voltage generator and method therefor in a semiconductor device having selectively activated internal stepped-down power supply voltages
05/19/1994DE4237394A1 Mains power unit esp. for cordless telecommunication equipment - supplies battery-recharging DC from bridge rectifier via pre-regulating series thyristor circuit and output voltage stabiliser
05/17/1994US5313111 Substrate slew circuit providing reduced electron injection
05/11/1994WO1994010622A1 Load programmable output buffer
05/11/1994WO1994003850A3 Bootstrapped current and voltage reference circuit utilizing an n-type negative resistance device
05/11/1994EP0596653A1 Low voltage reference current generating circuit
05/11/1994EP0596228A1 Oscillatorless substrate bias generator
05/11/1994EP0596061A1 Current mirror with at least one pnp transistor
05/10/1994US5311115 Enhancement-depletion mode cascode current mirror
05/10/1994US5311071 High speed threshold crossing detector with reset
05/05/1994DE4336907A1 Substrate potential generating circuit, e.g. for DRAM - has transmitter in charge pump circuit controlled to connect voltage applied to drain to substrate for predetermined time span
05/03/1994US5309083 Circuit for generating a reference voltage that varies as a function of temperature, in particular for regulating the voltage at which a battery is charged by an alternator
04/1994
04/27/1994EP0594294A2 Power supplies for flash EEPROM memory cells
04/27/1994EP0594162A1 Wide range power supply for integrated circuits
04/26/1994US5307027 Current mirror with low copying error
04/26/1994US5307007 CMOS bandgap voltage and current references
04/26/1994US5306964 Reference generator circuit for BiCMOS ECL gate employing PMOS load devices
04/21/1994DE4334918A1 Voltage supply circuit for semiconductor device - has level shifting circuit with two resistive components of different temp. coeffts. forming voltage divider
04/20/1994EP0593105A1 Efficient negative charge pump
04/20/1994CN1024308C Voltage reference circuit
04/19/1994US5305259 Power source voltage tracking circuit for stabilization of bit lines
04/19/1994US5304918 Reference circuit for high speed integrated circuits
04/19/1994US5304862 Constant current circuit
04/19/1994US5304861 Circuit for the detection of temperature threshold, light and unduly low clock frequency
04/19/1994US5304859 Substrate voltage generator and method therefor in a semiconductor device having internal stepped-down power supply voltage
04/14/1994DE4312117C1 Band spacing reference voltage source - incorporates current reflectors compensating early effect and voltage follower providing output reference voltage
04/12/1994US5302951 Wide-range linear output digital/analog converter
04/12/1994US5302888 CMOS integrated mid-supply voltage generator
04/06/1994EP0590903A1 Output limiter for class-D BICMOS hearing aid output amplifier
04/05/1994US5300877 Precision voltage reference circuit
03/1994
03/31/1994DE4331895A1 Reference voltage clamping circuit e.g. for semiconductor memory - uses constant current circuit to supply reference voltage to clamping transistor control electrode