Power saving low frequency power amplifier

Details Power saving low frequency power amplifier Power saving low frequency power amplifier

H - Electricity

03

F

330/32

H03F 1/02 (2006.01) H03F 3/183 (2006.01) H03F 3/30 (2006.01)

Patent

CA 1301263

ABSTRACT OF THE DISCLOSURE A power saving low frequency power amplifier includes a first stage amplifier for receiving and amplify- ing data signal, a second stage amplifier for amplifying the output of the first stage amplifier, and a power amplifier for amplifying the output of the second amplifier. the first stage amplifier is operated in response to a driving current. The second stage amplifier receives a first idling current for obtaining a predetermined amplification, and the power amplifier receives a second idling current for obtain- ing a predetermined amplification. A first switching circuit is provided for making and braking paths for the first and second idling currents provided for producing a power save signal to the first switching means for braking the first switching circuit when the power save signal is present.

608218

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