Friends in this video I will show you Telescopic Microphone..Hearing Aid..Mic Amplifier Circuit..Useful 3 IN 1 Circuit By Using LM386 IC..Friends it is a very useful circuit..You can use this circuit as a Telescopic Microphone as a Hearing Aid and as a Mic Amplifier Circuit..Friends in this circuit we will use LM386 IC and some components including a preset..You can adjust the mick gain and the out put sound of the circuit by adjusting the preset..Friends if you want to use this circuit as a telescopic microphone then connect a head phone with the circuit and you will have to use a large size plastic dish and you will have to connect the microphone as I say in the video..Friends in this video I will show you step by step complete process of making the circuit,,,just follow it..And friends if you want to use it as a hearing aid or as a mic amplifier circuit then you will have to connect the microphone with the circuit as I show in the video...Friends the complete process is in the video..Friends the circuit diagram of the circuit is in the video please see the circuit diagram...So friends if you want to know how to make a telescopic microphone,how to make a hearing aid and how to make a mic amplifier circuit in one circuit by a simple process then watch the video and follow my instruction....Thanks...
Used Materials..
1 piece blank pcb board, 1 piece LM386 IC, 1 piece 10uf/63v capacitor, 1 piece 100uf/25v capacitor, 1 piece 10nf capacitor, 1 piece 10k resistor, 1 piece 10k preset, 1 piece condenser mic,1 piece audio socket...
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