Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7545207 | Control circuit and method for a switching amplifier In a control circuit and method for a high efficiency and low EMI switching amplifier, an input signal is compared with a reference signal to generate a comparison signal, and a control signal is generated in response to the comparison signal for a driver to generat... | 06/09/2009 |
| 7388431 | Switching amplifier and control method thereof In a switching amplifier for generating a pair of output signals of square waves in response to an input signal, when the input signal is zero, the first output signal has a first duty cycle and the second output signal has a second duty cycle; when the input signal... | 06/17/2008 |
| 7388426 | Control circuit and method for a switching amplifier In a control circuit and method for a high efficiency and low EMI switching amplifier, an input signal is compared with a reference signal to generate a comparison signal, and a control signal is generated in response to the comparison signal for a driver to generat... | 06/17/2008 |
| 7327129 | Current sense circuit and method for a DC-to-DC converter In a DC-to-DC converter, a current sense circuit and method generate a first current by a first transconductive amplifier responsive to the output current of the converter for a controller to switch a high side switch and a low side switch, a second current from a f... | 02/05/2008 |
| 7265614 | Amplifier circuit with reduced power-off transients and method thereof In an amplifier circuit with reduced power-off transients, an amplifier is provided for receiving an input signal and a reference signal to generate an output signal therefrom when it is enabled, and the amplifier is disabled when the supply voltage to the amplifier... | 09/04/2007 |
| 7259619 | Amplifier circuit with reduced power-on transients and method thereof In an amplifier circuit with reduced power-on transients, an amplifier has a gain to generate an output signal from an input signal and a reference signal when it is enabled, and a control circuit generates a control signal, based on the output signal and the refere... | 08/21/2007 |
| 7105410 | Contact process and structure for a semiconductor device A contact process for a semiconductor device containing a base region of a first conductivity type formed on a semiconductor substrate comprises formation of a first shallow layer of the first conductivity type on the base region, deposition of an insulator on the f... | 09/12/2006 |
| 7098632 | Controller in a voltage mode buck converter for implementing a mode-switch function and an over-current protection by a multifunction pin and method thereof In a voltage mode buck converter having a pair of switches connected in series by a phase node to be switched by a pair of drive signals generated from a first control signal, a phase resistor is connected between a multifunction pin and the phase node, and a contro... | 08/29/2006 |
| 6888203 | Power chip set for a switching mode power supply having a device for providing a drive signal to a control unit upon startup A power chip set for a switching mode power supply includes a high voltage chip and a control unit chip. The high voltage chip contains a switching power metal-oxide-semiconductor (MOS) transistor being turned on/off under control of an output signal from the contro... | 05/03/2005 |
| 6423618 | Method of manufacturing trench gate structure A method for manufacturing a trench gate structure of a power metal-oxide-semiconductor field-effect transistor. A substrate is provided, which substrate has a epitaxial layer thereon, a base region formed in the epitaxial layer, a source region formed in... | 07/23/2002 |
| 6259618 | Power chip set for a switching mode power supply having a device for providing a drive signal to a control unit upon startup A power chip set for a switching mode power supply includes a high voltage chip and a control unit chip. The high voltage chip contains a switching power metal-oxide-semiconductor (MOS) transistor being turned on/off under control of an output signal from... | 07/10/2001 |
| 6137122 | Latch-up controllable insulated gate bipolar transistor A latch-up controllable insulated gate bipolar transistor is formed with a thyristor structure, which has a first region of a first conductivity type, a second region of a second conductivity type formed on the first region, a third region of the first co... | 10/24/2000 |
| 6066966 | Control circuit for hall-effect switching device A control circuit for Hall-effect switching device is provided. The control circuit can be used in a Hall-effect switching device to control the output of the Hall-effect switching device in response to Hall effect. The control circuit comprises a current... | 05/23/2000 |
