SPEAKER_AMPLIFIER_FOR_HAND_HELD_TRANSCEIVERS

Published:2009/7/6 2:08:00 Author:May | From:SeekIC

The LM383 is an audio-power amplifier that is capable of producing up to 8W of audio output. R1 is essentially a load resistor for the hand-held transceiver's audio output. R2 can be composed of two fixed resistors in a 10:1 divider arrangement, but using a potentiometer makes it easy to set the amplifier's maximum gain. When powered from a vehicle's electrical system, the amplifier's +12V power source requires filter L1 to eimtnate alternator whine. The LM383 can be mounted directly on the heatsink because the mounting tab is at ground potential.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Amplifier_Circuit/SPEAKER_AMPLIFIER_FOR_HAND_HELD_TRANSCEIVERS.html

Print this Page | Comments | Reading(3)