| Patent application number | Description | Published |
|---|
| 20080265820 | Motor driving circuits - A motor driving circuit comprising first and second input voltage source sets, a reference voltage source, first and second voltage level shift units, a logic unit, and an output voltage terminal. The first input voltage source set provides a first input voltage set. The second input voltage source set provides a second input voltage set. The reference voltage source provides a reference voltage. The first voltage level shift unit raises part of levels of the first input voltage set to a level of the reference voltage. The second voltage level shift unit partially raises levels of the second input voltage set to a level of the reference voltage. The logic unit receives the reference voltage and the first input voltage set and outputs a control voltage. The output voltage terminal receives the control voltage and outputs an output voltage. | 10-30-2008 |
| 20080265827 | Step motor driving circuits - A step motor driving circuit is provided. An exemplary step motor driving circuit includes an input voltage source set, a reference voltage source, a voltage level shift unit, a logic unit, a reset voltage source, and an output voltage terminal. The input voltage source set provides an input voltage set. The reference voltage source provides a reference voltage. The voltage level shift unit raises one of the levels of the input voltage set to a level of the reference voltage. The logic unit receives the reference voltage and the input voltage set and outputs a control voltage. The reset voltage source outputs a reset voltage to reset the logic unit. The output voltage terminal receives the control voltage and outputs an output voltage. | 10-30-2008 |
| 20080265971 | Voltage level shift circuits - A voltage level shift circuit has a plurality of input voltage sources, a reference voltage source, a voltage level shift unit, a stabilizing unit, a first output voltage terminal, and a second output voltage terminal. The input voltage sources provide a plurality of input voltages. The reference voltage source provides a reference voltage. The voltage level shift unit raises the input voltages to a level of the reference voltage. The stabilizing unit prevents power leakage and resulting abnormal voltage levels in the voltage level shift unit. The first output voltage terminal provides a first output voltage. The second output voltage terminal provides a second output voltage inverse to the first output voltage. | 10-30-2008 |
| 20090161279 | OUTPUT CIRCUITS - An output circuit preventing damage by electrostatic discharge current is provided, comprising a voltage source, a power-clamp ESD circuit, a PMOS transistor, an NMOS transistor, and a diode. The voltage source provides a voltage. The power-clamp ESD circuit is coupled to the voltage source and directs the electrostatic current to flow in a current direction. The PMOS transistor is coupled to the voltage source. The NMOS transistor is coupled to the PMOS transistor. The diode is coupled to the voltage source. The output unit is coupled to the diode and the PMOS transistor. | 06-25-2009 |
| 20090168279 | ESD protection circuit with gate voltage raising circuit - An ESD protection circuit with a gate voltage raising circuit is disclosed. The ESD protection circuit with a gate voltage raising circuit is used in a large size open drain circuit. A gate voltage raising circuit is used in the ESD protection circuit for raising the gate voltage of a NMOS. | 07-02-2009 |
| 20090168281 | ELECTROSTATIC DISCHARGE LEADING CIRCUIT - An electrostatic discharge (ESD) leading circuit for a large-sized open drain circuit is provided. The ESD leading circuit utilizes a gate voltage boosting circuit to increase the gate voltage of an N-type MOS transistor. | 07-02-2009 |
| 20090251097 | WIND POWER CHARGING DEVICES - A wind power charging device for a portable electric apparatus is provided. The wind power charging device includes a fan, a power transformation device, a switching device, a rechargeable battery, and an output terminal. The fan rotates according to wind power and generates rotation power. The power transformation device transforms the rotation power to electric power. The switching device receives the electric power and outputs a first charging voltage. The rechargeable battery is charged by the first charging voltage and discharged to output a second charging voltage. The output terminal receives the first charging voltage and the second charging voltage and outputs a third charging voltage. The switching device selectively outputs the first charging voltage to one of the rechargeable battery or the output terminal. | 10-08-2009 |
