Class 361/245 - POLARITY REVERSING

Subclass of Class 361 - Electricity: electrical systems and devices
Definition: Subject matter relating to the reversing of the polarity
No. of patents: 34
Last issue date: 04/29/2008

Number	Title	Issue Date
7365950	Wiring error detection circuit A wiring error detection circuit for providing the status of the wiring of an AC outlet and the status of the AC outlet's ground connection. ...	04/29/2008
7312653	NMOS reverse battery protection A reverse polarity protected system comprises a voltage source that includes positive and negative terminals. A polarity-sensitive device has a first terminal that communicates with the positive terminal of the voltage source, and that includes a second terminal. A ...	12/25/2007
7199722	Two wire alarm An alarm device that connects to a circuit using two wires and is actuated when a switch changes the status of the circuit from a normally closed circuit condition to open circuit condition. The alarm device includes a PC board with an electronic buzzer, an electron...	04/03/2007
7180135	Double gate (DG) SOI ratioed logic with intrinsically on symmetric DG-MOSFET load Disclosed is a Silicon-On-Insulator (SOI) Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET) logic family composed of ratioed logic with intrinsically “on” symmetric fully depleted double-gate (DG) SOI MOSFET load(s) and asymmetric fully depleted double ...	02/20/2007
7130179	Switching device provided with polarity-inverting means The invention relates to a switching device comprising programmable compensation means which are associated with the input/output connections for inverting the polarity of the input/output connections when said connections present a polarity inversion which is inher...	10/31/2006
7110239	Polarity correction circuit and system incorporating the same A polarity correction circuit including a polarity controller and an inversion circuit. The polarity controller is configured to detect an incorrect polarity in a polarity sensitive signal and provide inversion signal in response to the incorrect polarity. The inver...	09/19/2006
7106567	Hard disk drive (HDD) electrical over voltage stress (EOS) systems and methods The present invention relates to a hard disk drive system having overvoltage protection circuits for various types of overvoltage conditions. For example, the system includes one or more hard disk drive integrated circuit chips residing on a board and a hard disk dr...	09/12/2006
6582103	Lighting apparatus An illumination apparatus provides an output with high spatial uniformity of luminance. The illumination apparatus includes a cavity that has reflective surfaces and an output area. At least one light source is disposed in the cavity, with the light sourc...	06/24/2003
6493205	Process for polarizing a ferroelectric material in the shape of a cylinder Process for polarizing at least a part of a ferroelectric material in a cylindrical shape having a longitudinal axis, and having an internal conductor inside the cylinder disposed along the longitudinal axis. At least part of said cylinder is placed in a ...	12/10/2002
6429550	Polarity reversal protection circuit for a final electronic power stage A polarity reversal protective circuit for an electronic power output stage that can be driven via a drive circuit is described. In the case of an incorrect polarization of a supply voltage, power FETs are used in at least one supply terminal to interrupt...	08/06/2002
6166451	Distributed airbag firing system and interface circuit therefor A distributed airbag firing system (10) includes a controller (12) receiving sensor signals from a sensor (20) over a two-wire bus (18). The controller provides a firing command over to the two-wire bus to a squib driver circuit (26), which provides the f...	12/26/2000
6064125	Uninterruptible power supply unit An uninterruptible power supply unit for coupling between an adapter with an adapter connector and an electronic device in accordance with one embodiment of the present invention includes a self-contained housing, a backup power supply, and an output swit...	05/16/2000
5912514	Uninterruptible power supply unit An uninterruptible power supply unit for coupling between an adapter with an adapter connector and an electronic device in accordance with one embodiment of the present invention includes a self-contained housing, a backup power supply, and an output swit...	06/15/1999
5815388	Polarity reversing circuit having energy compensation A polarity reversing circuit having energy compensation may comprise a first inductor connected between the first electrode and a negative terminal of a power supply. The positive terminal of the power supply is connected to the second electrode. A diode ...	09/29/1998
5682067	Circuit for reversing polarity on electrodes A circuit for reversing a voltage polarity on a first electrode and a second electrode may comprise a first inductor connected between the first electrode and a negative terminal of an external power supply. The positive terminal of the power supply is co...	10/28/1997
5539610	Floating drive technique for reverse battery protection A MOSFET is used to protect a battery driven load against the effects of a reverse-connected battery. This invention is particularly suitable for use with loads, such as those commonly found in motor vehicles, which contain semiconductor devices that may ...	07/23/1996
5253138	Simplified supplying system of the position identification potentiometers of electronic memory mechanisms of a motor for setting automobile vehicle seats and the like A setting in position identification potentiometer is connected to terminals of the motor. The motor is supplied with a voltage (Ufeed) possibly variable and switchable between two reverse polarity states according to rotation direction. The po...	10/12/1993
5206540	Transformer isolated drive circuit A transformer isolated circuit for driving a semiconductor power switch includes a transformer which is driven with a high frequency Pulse Width Modulated (PWM) signal in such a way that the constantly present PWM carrier supplies the power needed for hig...	04/27/1993
5191507	Polarity inverting circuit A polarity inverting circuit includes first and second output voltage transmission circuits, first and second connection circuits, first and second polarity switching time changing circuits, and a controller. The first output voltage transmission circuit ...	03/02/1993
5187720	Synchronous serial communication circuit The synchronous serial communication circuit transmits and receives data, which is added flag patterns for recognizing the coil winding direction at the first and last of data block, by the electromagnetic induction system using a pair of coils. So, the c...	02/16/1993
5126914	Current inverter for an incandescent lamp in a car radio A lamp power control circuit for electric equipment which has a power supply, supplies power to incandescent lamps fitted to operating parts of electric equipment and is provided with a current-direction inverter unit. This current-direction inverter unit...	06/30/1992
5099385	Protected reversing contractor using a multifunctional transmission systrem for controlling acknowledgement switches A protected reversing contactor is disclosed comprising two electromagnets intended to be alternately energized and whose armatures actuate two sets of respective phase switches and two acknowledgement switches mounted respectively in series in the supply...	03/24/1992
4947285	Reversing circuit for direction reversal in direct current drives For the purpose of achieving an efficient and long-lived switching contact making on the basis of a structural design saving space and material, a reversing circuit for direction reversal in the case of direct current drives comprises four single-pole con...	08/07/1990
4906861	Superconducting current reversing switch A superconducting switching device having no moving components for reversing current flow through a load. This load typically is a superconducting magnet and, in this application, the present invention also selectively serves as a persistent switch. The i...	03/06/1990
4803587	Arrangement for change-over contact apparatus protection with interlocking member and module A changeover contact-making apparatus with interlocking member and module of protection protected against overcurrents is provided. In a same case, two contact-making systems and coil switches are disposed on each side of a median plane PP' in which the i...	02/07/1989
4792702	Switch for iontophoresing cation and anion Disclosed is a novel switch for iontophoresing cation and anion, comprising an on/off switch for power circuit; a selector switch for reversing the output current from an iontophoretic low-frequency oscillator; and a rotary member actuating said on/off- a...	12/20/1988
4737897	Regulated high voltage dc-dc converter with remotely switched output polarity control A power supply having a dual-polarity, automatically switchable high voltage output. The power supply includes apparatus for regulating low voltage including a comparator having a programming voltage input and a feedback voltage input. The low voltage is ...	04/12/1988
4647834	Battery charger This invention relates to a battery charger which includes a timer which becomes energized upon a battery approaching a fully charged condition and the timer then commences a preset timed equalization or finishing charge which brings each cell of the batt...	03/03/1987
4576262	Method and apparatus for operating a magnetic clutch The method and apparatus are used for operating a magnetic clutch system of the type which includes a magnetic clutch having a clutch magnetizing coil which can be actuated to couple a first rotatable element to a second rotatable element when voltage is ...	03/18/1986
4224538	Series supervision/parallel actuation device An electronic switch for use in alarm circuits in which line polarity is reversed in the actuation mode such that the electrical continuity of the circuit and the loads in the circuit may be supervised in series and upon polarity reversal the loads may be...	09/23/1980
4204243	Polarity indicating and reversing unit A polarity indicating and reversing unit for connecting a power supply line to a load line, the unit having a polarity indicating lamp for indicating a reverse polarity condition at the load and and a polarity reversing switch for reversing the polarity o...	05/20/1980
4144483	Electrical polarity switch for battery A switch including an input terminal which is electrically connected in use to one pole of an electric storage battery, an output terminal and a movable contact movable between an inoperative position wherein the movable contact is isolated from at least ...	03/13/1979
4071879	Reversible current apparatus Apparatus for producing a reversible local battery current to provide metering pulses on a two-wire telephone trunk circuit. A DC current supply produces a current of one polarity which is increased from zero to 20 milliamps over a period of 75 millisecon...	01/31/1978
3957333	Universal control system interface Disclosed is an interfacing connector to allow use of a control system with an external signal source which can be either a switched "hot" or a switched ground. Both such signal sources are found in certain applications, particularly in motor vehicles. Th...	05/18/1976

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Class 361/245 - POLARITY REVERSING