Re: Crystal Radio Amplifier


"Dave.H" <the1930s@xxxxxxxxxxxxxx> wrote in message
news:7bf4fd01-864f-42ec-b13b-cd5f9c06b3cb@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
This may be a stupid question, but I'm about to build a crystal radio
(http://www.bobsdata.com/crystal_radio/index.html) and I want to use a
little audio amp (Cat. KC5152 @ www.jaycar.com.au), and was wondering
if I'd need the matching preamp (Cat. KC5172 @ Jaycar) for the crystal
radio's high impedance output. Any help on this appreciated.

Thanks,
Dave


Hi Dave,
Crystal sets are fun to build and can teach something about radio and
electronics.
They are meant to 'power' a high impedance headphone. Yes you can amplify
the signal. You would need an amp with high input impedance and you most
likely would need additional amplification to drive the speaker. Keep in
mind that all the noise is amplified also.
IMHO: Much more fun with just the phones, but by all means experiment.

Tom


.

Relevant Pages

  • Re: Crystal Radio Amplifier
    ... Crystal sets are fun to build and can teach something about radio and ... They are meant to 'power' a high impedance headphone. ... Much more fun with just the phones, ... filter followed by detector and a high-powered audio amplifier. ...
    (sci.electronics.basics)
  • Re: Crystal Radio Amplifier
    ... Crystal sets are fun to build and can teach something about radio and ... They are meant to 'power' a high impedance headphone. ... Much more fun with just the phones, ... Of course, if get into trouble, you can always add an antenna amplifier, ...
    (sci.electronics.basics)
  • Re: Crystal Radio Amplifier
    ... They are meant to 'power' a high impedance headphone. ... Yes you can amplify ... You would need an amp with high input impedance and you most ... I intend on using headphones, ...
    (sci.electronics.basics)
  • Re: Crystal Radio Amplifier
    ... They are meant to 'power' a high impedance headphone. ... Yes you can amplify ... You would need an amp with high input impedance and you most ... I intend on using headphones, ...
    (sci.electronics.basics)