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Q no 1:- why we listen a sound when we put mic infront of speaker????
Ayne said:I have complete my pcb.
Final check remaining.
Put ur comments about my pcb.
Thanks.
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I will use moving coil(Dynamic Mic).What are you intending using it for?, and with what types of microphones?.
Plz explain grounf plain, and also explain how u add it??I might have used a ground plane on the other side for ground reference
Plz explain this in detial??? can it improve the performance???I also like to put RF interference rejection measures in place on wire connections to/from the board, but that's just me.
I am using LM317 for power supply. what u say!! resistors needed???I would put a small (22R) resistor on the incoming +ve and -ve supplies.
mneary said:Looks nice.
Ayne said:Help needed.
I am searching a summer circuit and want to sum those two signlas created by two different MICs.
Using one opAMP and it should be none inverted.. And with unity gian.
Ayne said:Summer Circuit.
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Pot(VR1) is in series of audio signal, It will decrease audio quality???
Can anyone have better circiut, or how can i improve this?