Electronic devices yell LM386 PT-8830


Posted on Dec 11, 2010

Electronic circuit shown in Figure crying, which consists of voice recording, audio power amplifier and power supply circuit composed of three parts. Wherein ICl to fool type o


Electronic devices yell LM386 PT-8830
Click here to download the full size of the above Circuit.

f voice recording IC PT-8815/20/30, it can be 30 seconds voice recording and playback; IC2 for the integrated power amplifier LM386, ICl output for amplifying a voice signal to the speaker to get enough power and loud voice; IC3 use 7805 type fixed three-terminal integrated voltage regulator.




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