Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-03-29
2008-08-26
Laxton, Gary L (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S284000
Reexamination Certificate
active
07417413
ABSTRACT:
A ripple converter includes a transistor for switching an input direct-current voltage, a choke coil and a smoothing capacitor for smoothing the switched direct-current voltage, a flywheel diode for causing a current to flow through the choke coil when the transistor is turned off, and a comparing unit for controlling the ON/OFF of the transistor according to ripple in an output voltage. In the ripple converter, a waveform converter is provided on a connecting path between an output terminal and a non-inverting input terminal of a comparator in the comparing unit. A result of converting the waveform of the output voltage is compared with a reference voltage, and a result of the comparison is fed back to the transistor.
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Official communication issued in the corresponding Chinese Application No. 200410079863.9, mailed on Jan. 12, 2007.
“Transistor Gijustu Special No. 28”; Saishin Dengenkairo Sekkeigijustsu no Subete; CQ Publishing Co., Ltd.; Jul. 1, 1991; pp. 46-47 and 176.
Official communication issued in the counterpart Japanese Application No. 2003-338069, mailed on Sep. 4, 2007.
Noma Takashi
Takemura Hiroshi
Keating & Bennett LLP
Laxton Gary L
Murata Manufacturing Co. Ltd.
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