Audio amplifier driven by single voltage source and related...

Details Audio amplifier driven by single voltage source and related... Audio amplifier driven by single voltage source and related...

2007-01-10

2008-09-02

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular power supply circuitry

C330S127000

Reexamination Certificate

active

07420422

ABSTRACT:
After coupling a first voltage source to a voltage supply circuit, a second voltage source having a same electrical level but an opposite electrical pole with said first voltage source is generated. An audio amplifier is then driven by both the first voltage source and the second voltage source, where said audio amplifier requires a pair of voltage sources having the same electrical level but opposite electrical poles to be driven. The voltage supply circuit generates the second voltage source from the first voltage source by simultaneously switching two sets of switches, where said both sets of switches have non-synchronous statuses in switching.

REFERENCES:
patent: 6617930 (2003-09-01), Nitta
patent: 7298214 (2007-11-01), Lee et al.

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