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| Patent # | Description |
|---|---|
| US-4,255,716 |
Automatic gain control circuit An automatic gain control circuit which comprises a variable resistance element connected between the power source and a transistor element to amplify a signal.... |
| US-4,255,715 |
Offset correction circuit for differential amplifiers The output of a differential amplifier, operating as a comparator, is coupled through a first switch to charge a small valued capacitor C.sub.1. The charge in... |
| US-4,255,714 |
GaAs Dual-gate FET frequency discriminator A microwave frequency discriminator comprising a dual-gate field effect transistor (FET) amplifier, bias circuits and a detector. The FET is biased to produce an... |
| US-4,255,713 |
Carrier regeneration circuit for polyphase modulation system An n (=8, 9)-valued polyphase modulation system having circuit construction for carrier regeneration in which not only correct phase demodulation is effected but... |
| US-4,255,712 |
Digital waveform conditioning circuit The disclosed circuit permits AC coupling of digital waveforms and rejects low frequency interference, yet restores proper waveform even to low frequency digital... |
| US-4,255,711 |
Coil arrangement for search head of a metal detector A unitary balanced-inductor system for use in the search head of an electronic metal detector, having a transmit coil, a smaller, preferably concentric cancel... |
| US-4,255,710 |
Plural search frequency directional metal detector apparatus having
enhanced sensitivity A directional concealed object locator, say metal detector, employing a beat frequency oscillator and at least two search oscillators. The search oscillators... |
| US-4,255,709 |
Device for providing an electrical signal proportional to the thickness
of a measured coating with an automatic... A device for measuring the thickness of coatings, wherein a thickness gauge is electrically coupled to a circuit intended to convert the electric signal at the... |
| US-4,255,708 |
Magnetoresistive position transducer with invariable peak signal Position identifying transducer using a pair of serially connected magnetoresistive elements with an output terminal at their juncture and which lie in a common... |
| US-4,255,707 |
Electrical energy meter Method and meter apparatus for measuring parameters of electrical energy quantities occurring in an electrical power distribution system. The meter apparatus... |
| US-4,255,706 |
Broadband voltmeter A voltmeter comprising a diode detector, a square root converter and a linear amplifier each connected to receive the diode detector output signal, a resistance... |
| US-4,255,705 |
Peak detection and electronic compensation of D. C. saturation
magnetization in current transformers used in... A watt hour meter installation is described which is of the type including an input transformer having an input winding for connection to an alternating current... |
| US-4,255,704 |
Zero crossing detection and electronic compensation of D. C. saturation
magnetization in current transformers... A watthour meter installation of the type including an input current transformer having an input winding for connection to an AC power supply line, an output... |
| US-4,255,703 |
Apparatus for testing the size and the spacings of silicon crystals in
Al-Si alloys An apparatus for testing the size and the spacings of silicon crystals in Al-Si alloys comprises a housing; a horizontal guide accommodated in the housing, and a... |
| US-4,255,702 |
Measurement of radiant energy scattering characteristics with a
turntable-type scanning apparatus A method and apparatus for measuring radiant energy scattering characteristics of a test panel of dielectric material over a circular arc are disclosed. The test... |
| US-4,255,701 |
Variable phase shift apparatus Variable phase shift apparatus employing two transistors having their bases connected together and their collectors connected together. The input terminal is... |
| US-4,255,700 |
Control circuit of reactive power compensation apparatus A control circuit of a reactive power compensation apparatus which comprises a reactor and a capacitor are connected in parallel between a power source and a... |
| US-4,255,699 |
Phase modulated power control An apparatus for applying AC power to a load while maintaining a minimum charge across a capacitor for use as a DC power supply, that may be connected in series... |
| US-4,255,698 |
Protection of batteries Improved methods of battery charge and/or discharge control make use of an electrical device which is connected in series with the cell or cells of the battery... |
| US-4,255,697 |
Cash register power supply system A cash register power supply system is disclosed which isolates the work system from the battery charging system. A battery charger charges one of two batteries... |
| US-4,255,696 |
Synchronous motor system A stepping motor with toothed stator poles and two sets of oppositely magnetized rotor teeth has its stator poles energized by a driver which responds to input... |
| US-4,255,695 |
Method and apparatus for control of inverter synchronous machine drive
system In an inverter-synchronous machine drive system subject to operator control, feedback control is employed to synchronize machine-inverter operation. A phase... |
| US-4,255,694 |
Power amplifier with power monitor circuit A power amplifier is disclosed for controlling the current flow through a load. The power amplifier includes a plurality of switching elements connected in... |
| US-4,255,693 |
Closed loop stepper motor circuitry without encoder Stepper motor control circuitry including a phase locked loop circuit formed by a phase detector outputted to a filter and a voltage controlled triangular and... |
| US-4,255,692 |
Non-light producing phosphor energizable lamp simulator and methods of
using same and making same A lamp simulator for use as a replacement for a phosphor excitable lamp, such as a fluorescent lamp in a plural lamp fixture. The fixture is typically one with... |
| US-4,255,691 |
Shockproof electronic flash device An electronic photoflash device includes a high voltage DC generator, a main storage capacitor and a reflector backed photoflash tube unit mounted on an... |
| US-4,255,690 |
Cathode heating apparatus for an electronic power tube An apparatus for heating the cathode of an electronic power tube, having a supply for delivering a heating current to the cathode, an interrupter circuit for... |
| US-4,255,689 |
Cathode ray tube with resistor means on glass support rods A cathode ray tube including an arc limiting resistor means (42) formed on an extension of the glass rods which align and fix the electrodes of the guns (28).... |
| US-4,255,688 |
Light emitter mounted on reflector formed on end of lead A light emitting display device having a light emitting element mounted on a first reflector at the optical center of a reflective surface thereof and a second... |
| US-4,255,687 |
Low pressure mercury vapor discharge lamp Low pressure mercury vapor discharge lamp having a cylindrical discharge vessel the inner surface of which is, at least partly, coated with a luminescent layer,... |
| US-4,255,686 |
Storage type photosensor containing silicon and hydrogen In a photosensor having at least a light-transmitting conductive layer which is arranged on the side of light incidence, and a photoconductive layer in which... |
| US-4,255,685 |
Rotating anode for x-ray tubes In order to reduce stresses which occur during radiation production because of the heating-up of the anode, radial bores are formed in the main body member of... |
| US-4,255,684 |
Laminated motor stator structure with molded composite pole pieces Stator structures are fabricated using strip material and moldable magnetic composite, either amorphous metal tape and amorphous flake or similar conventional... |
| US-4,255,683 |
Salient pole for an electric machine A salient pole includes a flat coil made up of a multilayer winding of round wire. The wire includes an adhesive layer which is cured after winding to... |
| US-4,255,682 |
Multipolar resolver A multipolar resolver is so constructed that the need of the conventionally indispensable coil on the resolver rotor is eliminated by providing a center coil on... |
| US-4,255,681 |
Miniature synchronous electric motor A miniature electric motor having substantially identical stator halves which are connected together by lugs axially interengaging on the circumference of the... |
| US-4,255,680 |
Linear induction motor A linear induction motor comprises an inductor made of individual cores with a concentrated polyphase winding placed thereupon and having legs connected by a... |
| US-4,255,679 |
Depletion load dynamic sense amplifier for MOS random access memory A random access memory device of the MOS integrated circuit type employs an array of rows and columns of one-transistor storage cells with a bistable sense... |
| US-4,255,678 |
Voltage sense circuit A voltage sense circuit in which first and second parallel connections of complementary MOS transistors are connected between a pair of signal lines connected to... |
| US-4,255,677 |
Charge pump substrate bias generator A semiconductor device having an integrated circuit of which a region of one conductivity type is charged by supplying charge carriers from a zone of the... |
| US-4,255,676 |
Semiconductor phase shift device for a charge transfer filter A phase shift circuit made from integrable semi-conductor elements. It comprises: a sampling stage formed by two MOS type transistors operating in phase... |
| US-4,255,675 |
Circuit arrangement for reducing the recovery time of a thyristor Circuit arrangement for reducing recovery time of a thyristor having a control electrode, a main emitter electrode and at least one auxiliary emitter electrode... |
| US-4,255,674 |
Semiconductor device having a multiple-emitter transistor A semiconductor device includes a bipolar transistor having at least two emitter zones. One of the emitter zones is divided into two separate sub-zones, which... |
| US-4,255,673 |
Input charge corrected monolithically integrated charge transfer device
(CTD) arrangement The invention relates to a CTD arrangement comprising an input stage (ETS) which increases each of the input, signal-dependent charge quantities by basic charges... |
| US-4,255,672 |
Large scale semiconductor integrated circuit device A large scale semiconductor integrated circuit device comprising plural transistors and resistors formed in one semiconductor substrate, and many emitter-coupled... |
| US-4,255,671 |
IIL Type semiconductor integrated circuit In an integrated injection logic (IIL) type semiconductor integrated circuit, an injector transistor is formed with a field effect transistor (FET) and an... |
| US-4,255,670 |
Transistor logic tristate output with feedback A TTL transistor logic tristate output device particularly suitable for common bus applications including transistor and diode means for feedback of a portion of... |
| US-4,255,669 |
Sensing apparatus Sensing apparatus for monitoring the operation of an electrical appliance. The sensing apparatus is plugged into a standard electrical outlet and the appliance... |
| US-4,255,668 |
Pulsed power supplies A pulsed power supply for driving an X-ray tube is described. Four p.f.n. devices are coupled in pairs to respective transformers and the individual devices... |
| US-4,255,667 |
X-ray shield stand Apparatus for shielding selected body areas of a person undergoing X-irradiation within an examination zone. The apparatus includes an upright post extending... |
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