Amplifiers – With semiconductor amplifying device – Including protection means
Reexamination Certificate
2007-09-28
2009-11-17
Nguyen, Khanh V (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including protection means
C330S20700P
Reexamination Certificate
active
07619481
ABSTRACT:
A power amplifier drives a load connected to a first output terminal and a second output terminal. When generation of over-current is detected by the current detection section, the output amplifier control section is controlled to stop the operation of the output amplifier section, and when a voltage greater than or equal to said set value is detected by said voltage detection section, the stopped operation of said output amplifier section is maintained even though generation of the over-current is not detected at the current detection section. When the terminal voltage detection section detects a terminal voltage greater than or equal to a predetermined voltage, over-current at the current detection section is suppressed.
REFERENCES:
patent: 5973569 (1999-10-01), Nguyen
patent: 2008/0048784 (2008-02-01), Shih
Ikeda Hiroshi
Takahashi Hajime
Cantor & Colburn LLP
Nguyen Khanh V
Sanyo Electric Co,. Ltd.
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