Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wen-Ming Chen0
Jie Liu0
Tao Wang0
Wang-Chang Duan0
Chun-Lung Hung0
De-An Zhang0
Date of Patent
February 16, 2010
0Patent Application Number
121874020
Date Filed
August 7, 2008
0Patent Primary Examiner
Patent abstract
An audio amplifier is provided. The audio amplifier includes an amplifier, a biasing circuit, and a time-delay circuit. The amplifier circuit is for amplifying audio signals. The biasing circuit is for providing a bias voltage to the amplifier circuit to actuate the amplifier circuit. The time-delay circuit is for receiving a pulse signal and delaying the bias voltage to avoid a sudden actuation of the amplifier circuit based on the pulse signal. The time-delay circuit comprises a first input for receiving the pulse signal, a first resistor coupled to the first input, a first output coupled to the biasing circuit, a first BJT whose base, emitter, collector are respectively coupled to the first resistor, ground, and the first output.
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