Re: Replacing Electret Microphone With Audio Input?

"Dave.H" (the1930s@xxxxxxxxxxxxxx) writes:
On Feb 15, 10:45 am, "Dave.H" <the19...@xxxxxxxxxxxxxx> wrote:
I am looking at a number of FM transmitter circuits, purely as a
project, but all of them use electret microphones as input. Would it
be possible to replace this with an audio input for my iPod?

I found a circuit that does use a regular audio input, but I can't
find a couple of capacitor values at *** Smith. The caps have to be
ceramic. I can find a 3.3 pF for the 3 pF, but I can't find a 10 nF
ceramic unit. Would it be OK to just parallel 10 1 nF caps, until I
can find a 10 nF unit?

10nF is .01.

1nF= .001
10nF=.01

Thus you need the extremely common .01uF capacitor. And I suspect
that's not even critical, such a large value is bound to be a bypass
capacitor and hence something around that value will do fine.

Michael

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