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I have made two changes from the original design. I am only using one LED not two and I'm using RadioShacks MPS2222A NPN transistors instead of the 9013's.
I have tested all of the parts out of the circuit and they do verify within spec's (the only exception to that is the surface mount mic that I have). I cannot figure out who the manufacturer of the part is (bought it to fill out a minimum order sort of thing). However is does show continuity across the leads.
If anyone is familiar with this circuit and knows of any changes that need to be made please send me an e-mail at:
Thank you for any help you can offer.
I have made two changes from the original design. I am only using one LED not two and I'm using RadioShacks MPS2222A NPN transistors instead of the 9013's.
I have tested all of the parts out of the circuit and they do verify within spec's (the only exception to that is the surface mount mic that I have). I cannot figure out who the manufacturer of the part is (bought it to fill out a minimum order sort of thing). However is does show continuity across the leads.
If anyone is familiar with this circuit and knows of any changes that need to be made please send me an e-mail at:
Thank you for any help you can offer.
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