Matches 251 - 300 out of 321 < 1 2 3 4 5 6 7 >
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5272399 Circuit limiting the load current of a power MOSFET  
A circuit configuration for limiting current flowing through a power MOSFET includes a voltage divider being connected between drain and source terminals of the power MOSFET and having a node at...
5258653 Power efficient voltage to current coverter  
A power efficient amplifier uses two stages, a low voltage stage and a high voltage stage. The low voltage stage supplies a nominal operating current to a load from a low voltage low power output...
5243271 Voltage stabilized power supply with capacitor isolation during supply voltage variations  
A power-supply arrangement comprises a reference circuit for generating a reference voltage (Vref). The reference circuit is coupled between a first (1) and a second (2) supply voltage terminal for...
5239453 DC to DC converter employing a free-running single stage blocking oscillator  
A DC to DC converter employs a single ended blocking oscillator which employs a transformer having a primary winding and a plurality of secondary windings. The transformer has a core which is of a...
5200692 Apparatus for limiting current through a plurality of parallel transistors  
Disclosed is an electrical control circuit (10) for controlling current through a furnace coil or other resistive load (14). The control circuit includes a plurality of current control stages...
5177431 Linear programming circuit for adjustable output voltage power converters  
An adjustable power converter which allows the output voltage of the power converter to be controlled linearly by a programming resistor or a programming voltage is provided. The adjustable power...
5087870 Constant power circuit  
A constant power circuit for causing a constant power level to be dissipated by a load when an overpower condition is detected. The overpower condition is detected by measuring the voltage across...
5079497 Circuit intended to supply a reference voltage  
The invention relates to a circuit intended to supply a reference voltage comprising a voltage generator (REF) provided with a supply terminal and an output for supplying a voltage having a given...
5034676 Direct current power supply circuit having automatic linear and switching modes  
A direct current power supply circuit converts an unregulated direct current input source such as an automobile battery to a regulated direct current output voltage for a device such as a mobile...
5025204 Current mirror using resistor ratios in CMOS process  
An operational amplifier drives the gate of a voltage controlled variation resistor having a source terminal coupled in series to a reference voltage through a current sense resistor and a drain...
5010292 Voltage regulator with reduced semiconductor power dissipation  
A series pass voltage regulator is provided which has reduced power dissipation in the semiconductor components of its output stage. The output stage includes first and second impedances which are...
4983905 Constant voltage source circuit  
A constant voltage source circuit which is provided with an output transistor (Q 1 ) for outputting a predetermined output voltage (V 0 ) in accordance with an input voltage (V IN ) and a...
4983955 Electric power supply circuit monitoring systems  
Monitoring an electric power distribution circuit having a rated load capacity includes continually sensing an intensity of electric power supplied through that circuit. In response to that sensing...
4982149 Electric supply apparatus having means for correcting supply voltage fluctuations  
Power supply equipment which comprises a power supply circuit (9) that supplies power to a load, a regulator circuit connected to the power supply circuit that regulates the output voltage of the...
4963814 Regulated bifurcated power supply  
A regulated power supply employs two separate sources of power which are serially connected by a variable impedance element, such as a transistor, connected between the two power sources. Output...
4926109 Low dropout voltage regulator with low common current  
A circuit is shown in which a voltage regulator has an output stage that operates as a Darlington when the input-output differential exceeds a threshold. The circuit automatically switches to a...
4893252 Monitoring system for the output stage of a bridge  
In a monitoring system for a bridge output stage which is connected in series with a controllable source of current, to the terminals of a source of operating voltage, the voltage over the bridge...
4864214 Solid state power controller  
A solid state power controller is provided with an output circuit having a transistor which is connected between a pair of output terminals. Base current to the transistor is provided by a drive...
4841219 Lossless overcurrent sensing circuit for voltage regulator  
An overcurrent sensing circuit for use with a voltage regulator, such as a linear post regulator for a power supply, utilizes a field effect transistor (FET) both as the pass element for the...
4825142 CMOS substrate charge pump voltage regulator  
A substrate bias voltage regulator (10) is disclosed having a voltage divider (22) for generating a reference voltage, a low gain stage (24) for developing a drive voltage independent of the supply...
4801860 Voltage stabilizer with a minimal voltage drop designed to withstand high voltage transients  
A voltage stabilizer with a minimal voltage drop designed to withstand high voltage transients includes a "series" type voltage regulator circuit with an NPN power transistor. The collector...
4792747 Low voltage dropout regulator  
A high efficiency dropout regulator (60) drives an output transistor (22) with a PNP transistor (52) if the overhead voltage from input (14) to output (26) is below a predetermined voltage. If the...
4792745 Dual transistor output stage  
A circuit is provided for distributing load current among multiple power transistors in an output stage, each power transistor being adapted to conduct current over a different range of...
4766605 Telephone tie trunk driver circuit  
A driver circuit to drive an M-lead in a tie trunk between telephone branch exchanges is disclosed. The driver continues to provide for a current increase as the resistance of the load on the...
4720758 Load dependent current limiter for the power supply of a multi-module electronic system  
A load-dependent current limiter for the power supply of a multi-module electronic system has a programming resistor in each module connected between the power supply voltage and a reference bus....
4717867 Apparatus for conserving power in operating a load  
A load, such as a control circuit for a DC/DC converter, is initially operated by an initial load powering voltage developed by a power consuming regulator until another voltage, such as the DC/DC...
4716359 Output stage control circuit  
An output stage control circuit comprises an output driving means connected to a load for driving the same, a control means for taking out detection signals corresponding to signals flowing to the...
4710697 Off-line series type regulating power supply  
An off-line regulating power supply utilizes a regulating transistor which perates in a dissipative mode for only a portion of each half cycle of an input AC voltage in order to regulate an output...
4706011 High voltage pulse detector with controllable current consumption  
A circuit for sensing a voltage present on an input line higher than a supply voltage V DD which includes an isolation switch coupled between the input line and an output line, a threshold...
4658198 Charging circuit for a reference capacitor  
A charging circuit is provided to decrease the settling time of a reference capacitor storing a reference voltage for data acquisition circuits. The charging circuit includes one or more comparator...
4647833 Power-supply circuit  
A flyback converter for charging a battery (6) from different input voltages in which, during the forward interval, a linearly increasing current flows through a transformer primary winding (n 1 )....
4626771 ECL slave reference generator  
A plurality of locally-distributed ECL slave reference generators positioned throughout a large monolithic integrated circuit device for tracking closely a central master reference generator to...
4612493 Control device for charging generator  
A control device for an alternator which can be fabricated as a single hybrid integrated circuit. The output of the alternator which is to be used to drive the field coil of the generator is...
4609864 Analog process controller with digital monitor  
A voltage comparator with both analog and digital outputs. The analog output being useful to control a analog processer such as a voltage regulator while the digital output gives an indication of...
4543522 Regulator with a low drop-out voltage  
A regulator with a low drop-out voltage receiving on a first terminal a supply voltage and supplying on its output terminal a regulated voltage. The input and output terminals are connected on the...
4538102 Power supply circuit  
A power supply circuit including a voltage stabilizing circuit and a voltage changing circuit responsive to an external control signal. The power supply circuit operates in one of two voltage-level...
4481462 Amplitude control system  
An amplitude control system comprising, arranged between the input (1) and the output (2) of the system, a series arrangement of a resistor (3) and an amplifier (5). The input of the amplifier (5)...
4471290 Substrate bias generating circuit  
A substrate bias generating circuit includes an oscillator circuit having a control terminal and a bias generating circuit for generating a negative substrate bias voltage responsive to the output...
4437053 Gradient power supply  
A power supply particularly suited for driving coils in a magnetic nuclear resonance device, or scanner, is described. Bipolar switches driven by field-effect devices are used to couple the coil to...
4437148 Peak voltage clamped power supply  
The cost and energy efficiency of a power supply are optimized in a semi-regulated circuit wherein regulation occurs only under a high voltage, low current condition when peak output voltage would...
4423369 Integrated voltage supply  
A complementary field effect transistor integrable voltage regulator suitable for use in CMOS integrated circuits includes first and second regulator sections coupled together. One regulator...
4404473 Direct current power controller  
A direct current power controller for use in electrical control systems such as aircraft control circuits. The controller utilizes a field effect transistor (FET) as the switching element. A bias...
4322675 Regulated MOS substrate bias voltage generator for a static random access memory  
A regulated substrate bias voltage generating system for maintaining a minimum data retaining current through an associated MOS memory. The negative substrate bias voltage is generated by a charge...
4287466 Control circuitry for maintaining forward and reflected transmission line power at a predetermined safe level  
Circuitry for controlling the power output of an R.F. generator for regulating the forward power transmitted into a load of varying impedance, such as an R.F. sputtering target, and for limiting...
4209710 Battery back-up regulator  
In an energization circuit for a memory module, the primary energization is derived from a primary power supply source fed through an isolating diode to a regulating circuit. The regulating circuit...
4179666 Method and circuit for controlling the output signal of a variable control circuit  
The output voltage of a variable control circuit, such as a variable gain amplifier, (20, FIG. 1), is controlled by a circuit interconnected in the feedback circuit of the amplifier. The circuit...
4179649 Voltage supply apparatus powered from a vehicular electrical system  
A series regulating transistor supplying voltage to a supply bus from a vehicular battery in which circuitry samples voltage from the supply bus for generating a correction signal for controlling...
4163161 MOSFET circuitry with automatic voltage control  
An automatic voltage regulating system for an integrated circuit having a plurality of enhancement mode metal oxide semiconductor field effect transistors on a common semiconductor crystal, the...
3984761 Line powered voltage regulator  
A line powered voltage regulator for producing a regulated voltage from the tip and ring terminals of a telephone line for low-powered circuit applications provides a high a-c impedance,...
3983473 Series direct-current voltage regulator  
A series direct-current voltage regulator. The regulator comprises a field effect transistor as a series regulating element and a reference element comprising a forward-biased PN junction.
Matches 251 - 300 out of 321 < 1 2 3 4 5 6 7 >