Switching power supply with multiple output voltages and an...

Details Switching power supply with multiple output voltages and an... Switching power supply with multiple output voltages and an...

2005-11-04

2008-11-18

Sterrett, Jeffrey L. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C363S021070, C323S902000

Reexamination Certificate

active

07453243

ABSTRACT:
If an intermittent oscillation pulse in a case in which the power consumption in the standby state is reduced at the maximum is supplied to a connection point from an output port of a microcomputer through a capacitor and a resistor, a DC component of the intermittent oscillation pulse is removed and is then supplied to the connection point. At this time, even when a voltage of the connection point becomes larger than a power supply voltage of the microcomputer, since a current does not flow backward from the connection point to the microcomputer, the microcomputer is normally operated. As such, the microcomputer is normally operated, so that the intermittent oscillation pulse is effectively supplied to the connection point. Thereby, a transistor is intermittently operated, the oscillation circuit intermittently performs oscillation operation, and the power consumption in the standby state is reduced.

REFERENCES:
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patent: 2004-32909 (2004-01-01), None
Japanese Office Action for Japanese Application No. 2004-321062, mailed on Feb. 23, 2007, with English translation thereof (5 pages).

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