help regarding the World's simplest transmitter II

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thermalbite8
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help regarding the World's simplest transmitter II

Post by thermalbite8 »

Hi

l was just wondering were is the input for the circuit (e.g microphone)
and how do u connect the ground next to the C1 in the circuit?

cheers :lol: :lol:
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pcs
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Post by pcs »

One end goes to ground, the other to the cap.

If its electret mic, connect the positive terminal to + via 10-22K resistor.
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kf4tqs
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another question...

Post by kf4tqs »

nevermind.
Last edited by kf4tqs on Sat Nov 05, 2005 8:25 am, edited 1 time in total.
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kf4tqs
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the mic thing

Post by kf4tqs »

well, i can see where the mic would come in, guy, but i wouldn't connect the mic straight to the circuit. I'd at least use a preamp the the condensor mic. This can be done quite easily with a 2n2222 or 2n3904 npn transistor. Take a look around the net...you'll find some basic schematics on electret preamps. Basically, from the npn's collector, you'll connect that to the audio input of this transmitter.
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