Bizarre Patents
Crispy Chip Sandwich and Process of Producing a Sandwich Product
A food product comprising a multilayer cookie or snack having outer layers formed from a crispy type edible food product such as a potato chip or corn chip, etc. with an intermediate marshmallow layer being in contact with the inner surface of each crispy chip and one or more filler substances.
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| Number | Title | Issue Date |
| 7961484 | Bipolar transistor drivers We describe a switching power converter comprising a bipolar switching device (BJT or IGBT) switching an inductive load, and including a closed-loop control system. The control system comprises a voltage sensing system to sense a voltage on a collector terminal of t... | 06/14/2011 |
| 7826239 | Overload protection delay circuit for switching power supply Disclosed is an overload protection delay circuit for use in a switching power supply for enabling the switching power supply to detect overload problems with high accuracy. The overload protection delay circuit is connected between a photo coupler and a pulse-width... | 11/02/2010 |
| 7558091 | Switching power supply apparatus The switching power supply apparatus includes detection means for detecting that leak current of an input smoothing capacitor becomes a predetermined value or more and first auxiliary switching means connected in series with respect to the input smoothing capacitor.... | 07/07/2009 |
| 7336057 | DC/DC converter A DC/DC converter includes: a boost converter that boosts an input voltage in accordance with a first control signal; an insulated converter that converts an output of the boost converter in accordance with a second control signal; a current sensor that detects an o... | 02/26/2008 |
| 7310251 | Control circuit having two-level under voltage lockout threshold to improve the protection of power supply The invention presents a switching power control circuit including two levels of under voltage lockout to improve the protection of the power supply. An input terminal of control circuit is connected to a supplied capacitor to supply the power of the control circuit... | 12/18/2007 |
| 7262559 | LEDS driver The power supply (20) for LEDs provides power to a LED light source (10) having a variable number of LEDs wired in series and/or in parallel. The power supply (20) uses current and voltage feedback to adjust power to the LEDs and provides protec... | 08/28/2007 |
| 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 |
| 7227762 | Fine-tuning circuit for the winding voltage of a transformer A fine-turning circuit is used for adjusting the output voltage of a main transformer in an electrical power convert device and solving the problem of turns granularity of conventional transformers. The fine-turning circuit includes an auxiliary transformer having a... | 06/05/2007 |
| 7184279 | Solid state switching circuit A solid state switching circuit utilizes a transformer in series with the circuit's switching device by which energy initially stored in the primary of the transformer is recovered in resonant circuitry connected to the secondary of the transformer for transfer of t... | 02/27/2007 |
| 7149098 | Over-power protection apparatus with programmable over-current threshold An over-power protection apparatus with programmable over-current threshold for a power converter is provided. The over-power protection apparatus further provides an over-temperature threshold for protection purposes. The over-power protection apparatus is able to ... | 12/12/2006 |
| 7038436 | Switching type dc-dc converter for generating a constant output voltage An inventive switching type dc-dc converter is adapted to set a protective reference current level lower for a decreased output voltage, and stop the switching control signal supplied to a switching transistor circuit when the detected current level exceeds the prot... | 05/02/2006 |
| 7030501 | Semiconductor device and switching element A conventional one-chip dual MOSFET has a structure in which two chips are arranged side by side and drain electrodes are short-circuited. Therefore, the mounting area thereof is large, and the resistance between the drain electrodes cannot be reduced. Accordingly, ... | 04/18/2006 |
| 7026767 | High-efficiency power supply apparatus used with a display panel driving system and method thereof A high-efficiency power supply apparatus used with a driving system of a display panel and a method of designing the same to improve an electrical power efficiency by providing a non-isolated direct current (DC) power directly to a display panel driving circuit comp... | 04/11/2006 |
| 7023187 | Integrated circuit for generating a plurality of direct current (DC) output voltages A cascaded DC-DC converter architecture has an upstream converter stage and a downstream converter stage, which derives its input voltage from the upstream stage. Cascading the two converter stages enables functionality of control and monitoring (including soft star... | 04/04/2006 |
| 7023714 | Voltage converter for a power supply A SEPIC type voltage converter (101) comprises a transformer (40) having a primary winding (41) and a storage capacitor (33) connected in series, and a controllable switch (51) coupled in parallel with said series combination. The ... | 04/04/2006 |
| 6950319 | AC/DC flyback converter A single-stage input-current-shaping (S2ICS) flyback converter achieves substantially reduced conduction losses in the primary side of the S2ICS flyback converter by connecting a bypass diode between the positive terminal of a full-bridge recti... | 09/27/2005 |
| 6947296 | Switching power supply circuit and electronic device A surge voltage detection circuit compares a stipulated voltage VS with the drain voltage of a switching element, the drain voltage being applied by a smoothing capacitor. The comparison result is supplied to a switching control circuit. If the drain volt... | 09/20/2005 |
| 6933767 | Circuit arrangement In an up-converter feed forward control of the output current is effected by rendering the conduction time of the switching element proportional to Vout/Vin2. This control is fast and avoids interference and loss of efficiency. ... | 08/23/2005 |
| 6813170 | Multiple output power supply having soft start protection for load over-current or short circuit conditions A protection circuit for a multiple output switching mode power converter protects against an over-current or short circuit failure condition. The protection circuit activates the soft-start circuit of the PWM control circuit upon detection of the over-current or sh... | 11/02/2004 |
| 6693811 | Integrated controller, method of operation thereof and power supply employing the same The present invention provides an integrated controller for use with a power supply employing a pulse width modulator and a method of operation thereof. In one embodiment, the integrated controller includes a primary control circuit configured to provide ... | 02/17/2004 |
| 6542388 | Intermittent switching power supply circuit An intermittent switching power supply circuit prevents excessive output power on a secondary side of a circuit. An intermittent oscillator is alternately switched on and off to maintain output voltage and/or current roughly constant. An output power moni... | 04/01/2003 |
| 6510064 | Power supply restart circuit A restart circuit for a power supply of an electronic system such as a computer system for delaying the restart of the power supply until a power supply output is in compliance with a specified parameter. In one embodiment, the specified parameter is a pa... | 01/21/2003 |
| 6487097 | Feedforward clamping applied to the control voltage in switch mode power supplies (SMPS) A method to dynamically clamp the feedback control voltage in DC--DC converters, with the purpose to limit the duty-cycle and to protect the magnetic components against saturation, over a wide range of input voltage conditions. The clamping level is funct... | 11/26/2002 |
| 6414860 | Current control start up for pulse-width modulated systems A PWM current control circuit that determines whether a start-up time, during which an decreased current is being drawn, for a load has elapsed and providing a switch that supplies current to the load with a control signal that limits the current being dr... | 07/02/2002 |
| 6362982 | Fault tolerant and conversion efficient power converter A power converter with an enhanced power conversion factor interfaces with electrical utility alternating current (AC) power sources to drive low voltage electrical loads. A high frequency drive signal is provided by an oscillating power driver stage. Enh... | 03/26/2002 |
| 6344982 | Power supply circuit A power supply circuit employed in various types of electronic appliances, telecommunications equipment, and the like, is provided for generating a voltage pulse by resonance effect of a primary side of a transformer, and outputting the voltage pulse from... | 02/05/2002 |
| 6341076 | Loss reduction circuit for switching power converters A DC-DC power converter, and, more specifically, an active snubber circuit, method of operation thereof and power converter employing the same, and more specifically, a pulse width modulated DC-DC power converter which processes power from an input DC vol... | 01/22/2002 |
| 6317341 | Switching circuit, method of operation thereof and single stage power factor corrector employing the same A switching circuit, a method of processing power and a single stage power factor corrector employing the switching circuit or the method. In one embodiment, the switching circuit includes: (1) a power switch coupled to a primary winding of a transformer;... | 11/13/2001 |
| 6313976 | Method and apparatus providing a multi-function terminal for a power supply controller A power supply controller having a multi-function terminal. In one embodiment, a power supply controller for switched mode power supply includes a drain terminal, a source terminal, a control terminal and a multi-function terminal. The multi-function term... | 11/06/2001 |
| 6301132 | Compact fast battery charger A compact, economical and fast battery charger for Ni-CAD and Ni-MH batteries turns a current source into a controlled voltage source which keys off a signal representative of the voltage level of the battery during the charging process and turns the curr... | 10/09/2001 |
| 6282107 | Integrated sense and switch circuitry for transformer core resetting An integrated circuit has a MOSFET comprising a drain terminal, a source terminal and a gate control terminal, the MOSFET having an equivalent circuit that includes an intrinsic diode; and a diode comprising an anode terminal and a cathode terminal.... | 08/28/2001 |
| 6272024 | D.c.-to-d.c. converter having an improved surge suppressor A d.c.-to-d.c. converter of the kind having a step-up or step-down transformer with a primary to be connected to a d.c. power supply via an electronic switch, and a secondary to be connected to a load via a smoothing and rectifying circuit. The voltage be... | 08/07/2001 |
| 6198637 | Switching power supply circuit A switching power supply circuit includes a transformer having a primary winding, a secondary winding, and a feedback winding, a switching element connected in series to a first of the primary winding, a control circuit disposed between a control terminal... | 03/06/2001 |
| 6094362 | Switched-mode power converter with triple protection in a single latch A single overvoltage, overcurrent, and overtemperature protection circuit for use in an off-line switched-mode power converter using current-mode pulse-width modulation control. A single latch circuit provides shutdown control via either voltage or curren... | 07/25/2000 |
| 5978238 | Active clamp for buck-based converter and method of operation thereof For use with a buck-based converter having a rectifier that receives current from a secondary side of a isolation transformer, an active clamp and a method of operating the buck-based converter to manage reverse recovery energy therein. In one embodiment,... | 11/02/1999 |
| 5940281 | Switched-mode power supply with magnetic flux density control A switched-mode power supply with a transformer where the output current or the output voltage is controlled or regulated as a function of the, magnetic flux density of the transformer. Thus it is advantageously avoided that the transformer runs into satu... | 08/17/1999 |
| 5917712 | Self oscillating power supply An inexpensive highly reliable power supply for small-sized electronic devices, in which any high-withstand-voltage diode which has been used conventionally is not used and reverse leak currents are prevented. A series circuit of a primary-side coil (34) ... | 06/29/1999 |
| 5639395 | Microwave heating apparatus for reducing high-frequency in an electric power circuit A microwave heating apparatus is disclosed. The microwave heating apparatus includes: a rectifying section for rectifying an AC current; an inverting section for being turned on/off by the driving signals of a driving section to generate high frequency vo... | 06/17/1997 |
| 5638261 | Interlock switching system and method An interlock switch (14) is provided between a housekeeping power supply (12) and a pulse width modulator (16). The pulse width modulator (16) pulses a field effect transistor (18) to generate alternating current (AC) to be passed by a transformer (26). T... | 06/10/1997 |
| 5621625 | Surge protection circuit for a switching mode power supply A surge protection circuit for a switching mode power supply utilizing the switching phase difference of substantially 180 degree between primary and secondary coils of a switching power supply transformer snubs surges induced on both sides of the power s... | 04/15/1997 |
