Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2007-01-23
2007-01-23
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S103000, C327S543000, C363S021100
Reexamination Certificate
active
11100403
ABSTRACT:
An output signal of an error amplifier5, which has a reference terminal to which a voltage having no temperature characteristics fluctuation is applied and which has a detection terminal to which a voltage detecting terminal VO2is connected, is transmitted to the control terminal of a switching element6. Voltage fluctuation at the voltage detecting terminal VO2is output as a current signal by a V-1 conversion circuit constituted by a current mirror circuit having a constant current source4, the switching element6, and switching elements7and8to a detected signal output terminal PC via the error amplifier5. The signal is transmitted to the outside by a optical coupler14to control a voltage at an output voltage terminal VOUT. A voltage detection circuit, in which a desired voltage is acquired by controlling voltages at terminals supplied with power, exhibiting lower power consumption and improved voltage detection accuracy and a power supply unit having low ripple voltage and a reduced components count are implemented.
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“Feature—All of the Latest Switching Power Supply Techniques,” Transistor Technology Special Issue, CQ Press, Jan. 1, 1997, No. 57, pp. 77 and 86, with partial English translation.
Japanese Office Action dated Aug. 31, 2006 with English translation.
Matsushita Electric - Industrial Co., Ltd.
Stevens Davis Miller & Mosher LLP
Tra Quan
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