I figured out that the socket at the wall was not grounded. So I
grounded it at the fuse box and now the hum is gone! Ok making progress.<br>
<br>
pete<br>
<br><br><div><span class="gmail_quote">On 5/30/05, <b class="gmail_sendername">Pete</b> <<a href="mailto:23isgood@gmail.com">23isgood@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hey everybody. I have been trying to get this circuit to work but I
simply don't understand why I get no sound out of it. This is out of
Thomas Henry's "Noise Generator Cookbook" In the book he mentions to
use a, 2n2712 for the transistor or a 2n3904. I am using a 2n3904. I
built this basic circuit on a breadboard, and im using a 1/4" jack for
the output, and a 15v power supply. Do I have to apply power to the
pins of the 741? It does not specify to do so. I attached a pic of the
circuit. Im pretty much a beginner on this stuff and trying to teach
myself. I have rebuilt this thing a few times double checking
everything. According to the book there should be a good amount of
noise coming out of this thing. Is there something that I am not aware
of that im overlooking?<br>
<br>
Thanks<br>
pete<br><span class="sg">-- <br>listen to my latest tunes,<br><br><a href="http://www.cubanpetemusic.com/p23%20Litmus.mp3" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.cubanpetemusic.com/p23%20Litmus.mp3
</a><br><br><a href="http://www.cubanpetemusic.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">www.cubanpetemusic.com
</a>
</span><br clear="all"></blockquote></div><br><br><br>-- <br>listen to my latest tunes,<br><br><a href="http://www.cubanpetemusic.com/p23%20Litmus.mp3">http://www.cubanpetemusic.com/p23%20Litmus.mp3</a><br><br><a href="http://www.cubanpetemusic.com">
www.cubanpetemusic.com</a>