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)
11/1991
11/13/1991EP0455834A1 Sense amplifier control circuit
11/13/1991EP0390859A4 Low power voltage clamp circuit
11/12/1991US5065043 Biasing circuits for field effect transistors using GaAs FETS
11/05/1991US5063343 Current pump structure
11/05/1991US5063310 Transistor write current switching circuit for magnetic recording
10/1991
10/30/1991EP0454250A1 Reference generator
10/30/1991EP0454243A1 Buffer circuit
10/29/1991US5061907 High frequency CMOS VCO with gain constant and duty cycle compensation
10/29/1991US5061862 Reference voltage generating circuit
10/29/1991US5061861 Mos integrated circuit for driving light-emitting diodes
10/22/1991US5059890 Constant current source circuit
10/22/1991US5059826 Voltage threshold generator for use in diode load emitter coupled logic circuits
10/22/1991US5059820 Switched capacitor bandgap reference circuit having a time multiplexed bipolar transistor
10/22/1991US5059815 High voltage charge pumps with series capacitors
10/17/1991DE4037822C1 Current supply source for HF range - uses transistors in circuit as current mirror, one formed as reference diode and other as source transistor
10/17/1991DE4012174A1 Current dividing circuit - sub-divides input current into predetermined output magnitude
10/16/1991EP0451870A2 Reference voltage generating circuit
10/15/1991US5057792 Current mirror
10/15/1991US5057721 Level shift circuit for controlling a driving circuit
10/15/1991US5057707 Charge pump including feedback circuitry for eliminating the requirement of a separate oscillator
10/15/1991US5057704 Semiconductor integrated circuit having substrate potential detecting circuit commonly used
10/10/1991DE4039524A1 Substrate bias generator arrangement - has dual generators for run=up of power and stable supply states
10/09/1991EP0450830A2 Voltage reference having steep temperature coefficient and method of operation
10/09/1991EP0450797A1 Charge pump apparatus
10/09/1991EP0450027A1 Method and device for compensating drift in a semiconductor element
10/08/1991US5055719 Current conveyor circuit
10/02/1991EP0449567A2 Positive to negative voltage translator circuit and method of operation
10/02/1991EP0449441A1 Antisaturation circuit for a bipolar transistor
10/02/1991EP0449264A2 Pulse signal generator and redundancy selection signal generator
10/02/1991EP0449235A2 High efficiency charge pump circuit
10/02/1991EP0448908A1 Method for generating a stable DC voltage and stabilized DC voltage source
10/01/1991US5053640 Bandgap voltage reference circuit
10/01/1991CA1290014C Ferroresonant three-phase constant ac voltage transformer
09/1991
09/24/1991US5051686 Bandgap voltage reference
09/18/1991EP0446724A2 Current limiting method and apparatus
09/18/1991EP0446595A2 A buffer circuit
09/17/1991US5049807 All-NPN-transistor voltage regulator
09/17/1991US5049806 Band-gap type voltage generating circuit for an ECL circuit
09/17/1991CA1289202C Latch-up protection circuit for integrated circuits using complementarymos circuit technology
09/10/1991US5047730 Operational amplifier having stable bias current providing means
09/10/1991US5047707 Voltage regulator and method for submicron CMOS circuits
09/10/1991US5047706 Constant current-constant voltage circuit
09/10/1991US5047661 Superlattice precision voltage reference
09/03/1991US5045773 Current source circuit with constant output
09/03/1991US5045772 Reference voltage generator
09/03/1991US5045732 Polygon circuit
09/03/1991US5045716 Integrated circuit in complementary circuit technology comprising a substrate bias voltage generator
08/1991
08/28/1991EP0443239A1 Current mirror with base current compensation
08/28/1991EP0443238A2 Precision switched current source
08/22/1991WO1991012574A1 Current conveyor
08/21/1991EP0442001A1 Comparator circuit
08/20/1991US5041893 Semiconductor integrated circuit including an intrinsic MOS transistor for generating a reference voltage
08/20/1991US5041739 Substrate potential generating circuit
08/14/1991EP0441201A2 A substrate bias voltage detection circuit
08/07/1991EP0440434A2 Constant voltage generating circuit
08/06/1991US5038053 Temperature-compensated integrated circuit for uniform current generation
07/1991
07/31/1991EP0438655A2 ECL circuit for resistance and temperature bus drop compensation
07/30/1991US5036218 Antisaturation circuit
07/30/1991CA1287104C Level shifter for a power supply regulator in a television apparatus
07/24/1991CN1013331B Voltage level conversion circuit
07/23/1991US5034964 N:1 time-voltage matrix encoded I/O transmission system
07/23/1991US5034677 Bias voltage supplying circuit
07/23/1991US5034635 Positive to negative voltage translator circuit and method of operation
07/23/1991US5034626 BIMOS current bias with low temperature coefficient
07/23/1991US5034625 Semiconductor substrate bias circuit
07/16/1991US5032774 Current sensing circuit for use with a current controlling device in a power delivery circuit
07/09/1991US5030903 Voltage generator for generating a stable voltage independent of variations in the ambient temperature and of variations in the supply voltage
07/09/1991US5030848 Precision voltage divider
07/04/1991DE4037823A1 Working current generating circuit - has current determined by resistor in series with transistor emitter-collector path
07/02/1991US5029295 Bandgap voltage reference using a power supply independent current source
07/02/1991US5029282 Voltage regulator circuit
07/02/1991US5029280 ECL circuit for resistance and temperature bus drop compensation
06/1991
06/27/1991WO1991009440A1 Current control circuit
06/26/1991EP0433724A2 Voltage regulator with power boost system
06/25/1991US5027250 Electronic circuit with a protection device against fluctuations in the supply battery voltage
06/25/1991US5027054 Threshold dependent voltage source
06/25/1991US5027053 Low power VCC /2 generator
06/25/1991US5027016 Low power transient suppressor circuit
06/25/1991US5027014 Translator circuit and method of operation
06/25/1991US5027004 Circuit for regulating the base current of a semiconductor power device
06/18/1991US5025204 Current mirror using resistor ratios in CMOS process
06/11/1991US5023543 Temperature compensated voltage regulator and reference circuit
06/11/1991US5023465 High efficiency charge pump circuit
06/05/1991EP0430653A2 Diode load ECL circuit
06/05/1991EP0430354A2 Detection circuit of the current in an MOS type power transistor
05/1991
05/30/1991WO1991007757A1 Sense amplifier control circuit
05/29/1991EP0429198A2 Bandgap reference voltage circuit
05/22/1991CN2077562U Resonance-type a.c manostat
05/21/1991US5018041 Circuit for internal current limiting in a fast high side power switch
05/21/1991US5017858 Constant-current regulated power circuit
05/21/1991US5017817 Basic circuitry particularly for construction of multivalued logic systems
05/16/1991WO1991006979A1 Method and device for compensating drift in a semiconductor element
05/16/1991WO1991006839A1 Integratable temperature sensor circuit
05/15/1991EP0427387A2 Apparatus for converting input signals into an output signal
05/15/1991EP0302856B1 Improvements in ferroresonant constant-voltage transformers
05/15/1991CN1051438A Source voltage control circuit
05/14/1991US5015942 Positive temperature coefficient current source with low power dissipation
05/14/1991US5015873 Semiconductor driver for producing switching and offset signals
05/08/1991EP0426150A2 Constant voltage circuit
05/08/1991DE3936773A1 Integratable temp. sensor with high sensitivity - contains current mirror circuits and voltage amplifier circuit contg. series resistor and transistor