Today we are going to discuss about a Low cost, compact Audio Pre-Amplifier with Loud speaker. By using this device you can hear your voice loudly with a better quality. The circuit provides an output power of about 0.5 watts by just 5V supply. It can be used as a part of intercoms, walkie-talkies, pocket radio receivers etc… all the components used in this project are readily available in the market at low cost.
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