Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 8154887 | Dual isolated input single power supply topology An electric power supply system includes a transformer having two primary windings for receiving input power and a secondary winding for delivering output power, in which the primary windings are galvanically isolated from each other. A method for supplying electric... | 04/10/2012 |
| 8077481 | Primary sampling current controlled synchronous rectifying drive circuit A primary winding current controlled synchronous rectifying drive circuit including a current sampling circuit that detects a current signal in a primary winding of a transformer and forwards it to a signal shaping and reset circuit, and a current compensation signa... | 12/13/2011 |
| 7894211 | Micro wind turbine topology for small scale power generation A wind energy converter has a generator adapted to be coupled directly to a wind turbine without need for a mechanical gear unit. A rectifier is coupled to the generator and a converter is coupled to the rectifier to provide a regulated DC bus voltage as a function ... | 02/22/2011 |
| 7746668 | Galvanically isolated direct current transducer The invention relates to a switching device for galvanically isolated 1:1 transmission of a direct current signal, with a transformer comprising a primary coil and a secondary coil, wherein the primary coil is powered with alternating current derived from an input d... | 06/29/2010 |
| 7706152 | DC-DC converter for low voltage power source A power conversion unit and method for converting DC power. The power conversion unit includes a self-oscillating device configured to convert a DC voltage into a self-oscillating alternating current AC signal, a transformer connected to the self-oscillating device ... | 04/27/2010 |
| 7675757 | DC-DC converter Disclosed is a DC-DC converter including: a first switching element ON/OFF controlling a current fed from a primary side to a secondary side; a second switching element provided in parallel to the first switching element, controlled at a substantially same timing as... | 03/09/2010 |
| 7616454 | Control circuit having programmable waveform for limiting output power of power converter A control circuit having a programmable waveform for the output power limit comprises an oscillation circuit to generate an oscillation signal. The oscillation signal is used for producing a switching signal to control a switching device in response to a feedback si... | 11/10/2009 |
| 7599197 | Power supply apparatus A rectifying circuit (18) converts inputted AC power to DC power. An inverter circuit (22) converts the DC power to high-frequency power in accordance with a switching control signal applied thereto from a control circuit (50). A voltage transfo... | 10/06/2009 |
| 7492611 | Intelligent power-supplying device An intelligent power-supplying device includes an alternating current (AC) input port, a direct current (DC) input port, a displayer, a reset key and a DC output port. The AC input port receives an AC power while the DC input port receives a DC power. The power-supp... | 02/17/2009 |
| 7436842 | Outlet with analog signal adapter, a method for use thereof and a network using said outlet An outlet for a Local Area Network (LAN), containing an integrated adapter that converts digital data to and from analog video signal. Such an outlet allows using analog video units in a digital data network, eliminating the need for a digital video units or externa... | 10/14/2008 |
| 7391626 | Chop wave control circuit A chop-wave control circuit includes a feedback unit, a ramp generation unit, a latchup unit and a voltage transformation unit that is used on a forward transformation circuit which includes at least a main output unit and at least one auxiliary output unit. The fee... | 06/24/2008 |
| 7372397 | Energy storage in a radar level gauge A radar level gauge using microwaves for measuring a level of a surface of a product in a container, comprising a microwave unit, processing circuitry connected to said microwave unit, an interface for connecting said radar level gauge externally thereof, and a powe... | 05/13/2008 |
| 7365501 | Inverter transformer An inverter transformer includes a coil unit including a bobbin and a plurality of windings, and a transformer core unit. The bobbin is formed with a core-receiving compartment, and includes first, second and third coil winding portions. The windings are wound aroun... | 04/29/2008 |
| 7335552 | Electrode for thin film capacitor devices A method of forming a conductor on a substrate including steps of depositing tantalum on a glass layer of the substrate; oxidizing the tantalum; and depositing a noble metal on the oxidized tantalum to form the conductor. The method can be used to form a ferroelectr... | 02/26/2008 |
| 7333142 | Power supply apparatus and actuator control apparatus In accordance with the switching operation of a switching section, current is made to flow from a battery to an inductor repeatedly. A voltage generated at the inductor is smoothed by a condenser and then input to a regulator. A D/A converter within a CPU monitors t... | 02/19/2008 |
| 7327178 | Timing control circuit for lossless switching converter A timing control circuit (70) generates staggered signals from a pulse width modulated signal (68) providing lossless switching in a DC to DC power converter (10). The DC to DC power converter (10) comprises two input MOSFET switches (... | 02/05/2008 |
| 7315460 | Switching power supply device A series circuit in which a first switching element and a second switching element are connected in series at both ends of an output of an input rectifier circuit for rectifying an alternating current of an alternating current power supply, a resonant circuit in whi... | 01/01/2008 |
| 7304866 | System and method for power converter switch control A power converter includes a transformer having a primary winding and a secondary winding, and a plurality of switches coupled to the primary and secondary winding, the plurality of switches responsive to at least one control signal to short both the primary and sec... | 12/04/2007 |
| 7305065 | X-ray generator with voltage doubler Between terminals of secondary windings in a high-voltage transformer (3), there are connected in parallel input side terminals of a plurality of diode full bridge circuits each via voltage maintaining means such as a capacitor maintaining a voltage peak valu... | 12/04/2007 |
| 7283089 | Radar system and car radar system A power supply apparatus controls the gate and drain power supplies at the rise time so that an output voltage of the gate power rises earlier than that of the drain power supply. Another power supply control apparatus controls the gate and drain power supplies at t... | 10/16/2007 |
| 7274175 | Multiple output power supply that configures itself to multiple loads A two stage multiple output power supply device is capable of outputting programmable DC voltages onto multiple outputs. The first stage receives an AC supply voltage and outputs a DC supply voltage. The second stage includes a DC-ID controller and multiple DC-to-DC... | 09/25/2007 |
| 7274112 | Method and apparatus for providing uninterruptible power Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to recei... | 09/25/2007 |
| 7271579 | AC signal level detection circuit An AC voltage generated by an AC power source 1 is rectified by a full-wave rectifying circuit 2, which generates a rectified voltage. An internal regulator 33 performs waveform shaping of the rectified voltage. A comparator 42 compares t... | 09/18/2007 |
| 7268658 | Transformer having leakage inductance control structure A transformer having a leakage inductance control structure includes a primary coil, a secondary coil formed at a selected coil ratio relative to the primary coil to transform voltage and output electric power, and a leakage inductance control coil which is wound on... | 09/11/2007 |
| 7259603 | Switch mode power converter A switch mode power converter is provided which includes a switching cell with a supply input, an output and a control input. A summing comparator has first and second differential input pairs and an output. The output is connected to the control input of the switch... | 08/21/2007 |
| 7253594 | Reducing power/area requirements to support sleep mode operation when regulators are turned off A single sleep mode controller which ensures that there is at least a corresponding minimum voltage level across capacitors when the corresponding regulators are turned off. In an embodiment, the sleep mode controller uses a single comparator which compares the volt... | 08/07/2007 |
| 7248001 | Method and system for modulating frequency in a night vision system power system A night vision system including a power system having a low voltage unit coupled to a high voltage unit. The low voltage unit includes a low voltage controller and a low voltage table correlating pulse widths to step values. The low voltage unit transmits the step v... | 07/24/2007 |
| 7245091 | Inverter capable of switching working frequency An inverter capable of switching working frequency for activating a lamp. The inverter comprises a voltage converter, a feedback circuit, a control unit and a frequency switcher. The voltage converter transforms a DC input voltage into a second AC voltage according ... | 07/17/2007 |
| 7235932 | High efficiency ballast for gas discharge lamps An electronic ballast for a gas discharge lamp includes an adjustable constant current source circuit adapted to convert a direct current input to provide an initial start current and a variably controlled constant current. A coupling transformer circuit is connecte... | 06/26/2007 |
| 7236086 | Power converter configuration, control, and construction A transformer having galvanically isolated windings defines a primary side and a secondary side of a power conversion apparatus. A switch couples power from a source on the primary side via the transformer to a load on the secondary side. A first circuit assembly ha... | 06/26/2007 |
| 7236375 | DC/AC converter and its controller IC An inverter has a semiconductor switch circuit in the primary winding of a transformer such that each of the switches of the switch circuit is controlled by pulse-width modulation (PWM) to supply a constant ac current and a constant ac voltage to a load, such as a c... | 06/26/2007 |
| 7224218 | Pre-charge apparatus and method for controlling startup transients in a capacitively-coupled switching power stage A pre-charge apparatus and method for controlling startup transients in a capacitively-coupled switching power stage provide lower cost and improved startup transient performance in Class D amplifiers, as well as in other AC power converter applications. A charging ... | 05/29/2007 |
| 7218531 | Switching regulator with reduced conducted emissions A fixed-frequency switching regulator having a noise injection circuit. Noise is injected into the feedback loop of the switching regulator to modify the switching waveform to reduce individual frequency harmonics of the resultant Fourier Series. The reduced frequen... | 05/15/2007 |
| 7218536 | Voltage regulator converter without switching losses The invention concerns a converter which includes two input terminals and two output terminals, a main transformer presenting primary and secondary windings connected between the input terminals and the output terminals respectively, a switching device, a first indu... | 05/15/2007 |
| 7212407 | Electrical power converter method and system employing multiple output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 05/01/2007 |
| 7208928 | Oscillatorless DC-DC power converter A power converter for coupling an energy source to a load device comprising a selectively coupled output stage to deliver energy from an energy source to a load device, a controller coupled to the output stage, an output stage, a capacitive element coupled to the ou... | 04/24/2007 |
| 7208883 | Current detection circuit, and power supply apparatus, power supply system and electronic apparatus using the current detection circuit In the current detection circuit that detects the output currents of a switching power supply circuit, an improved current detection circuit makes it possible to detect the output current directions of power supplies solves the malfunction of the power supplies vibr... | 04/24/2007 |
| 7208920 | Buck/boost power converter A buck/boost converter having an input and an output, a switching cell with a switch between the input and the output, and a selector selectively configuring the switching cell into at least two configurations from among the following: a parallel chopper configurati... | 04/24/2007 |
| 7193873 | Cradle for receiving an adapter A cradle casing has a DC/DC adapter to receive DC power from a DC power source and generate a first DC power signal. A sleeve accepts an AC/DC adapter, and guides movement of the AC/DC adapter when the AC/DC adapter is inserted into the cradle casing. The AC/DC adap... | 03/20/2007 |
| 7190147 | Battery with complete discharge device A battery having a complete discharge mechanism includes a spring-biased switch with an element spring-biased from the switch and acts to close the switch when in a fully extended position. A block is position above the element with a passageway aligned with the ele... | 03/13/2007 |
