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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Tue 29, 2003 5:00 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 422
Location: E. Peoria. Ill,USA
Hi All,<BR> I have a Knight signal trace (83Y135) that has a probe with a crystal diode in it. Not having any luck finding one to make a new probe, what would I look for in a more modern diode? Would a 1N34A or a OA79 germanium diode work? I'm open to suggestions here guys(gals).<BR>Thanks and take care<BR>Bud<BR><P>------------------<BR>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Tue 29, 2003 5:08 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 3667
Location: Circleville, OH, USA
Either one would work fine. Be sure to use Ge, not Si.<P>------------------<BR>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Tue 29, 2003 5:31 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 422
Location: E. Peoria. Ill,USA
Hi Ken,<BR> By that I assume you mean use germanium and not silicone?<BR>Take care<BR>Bud<BR><P>------------------<BR>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Tue 29, 2003 6:16 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 6075
Location: Evanston, IL
Yes, that's correct Bud.<P>But the element is Silicon.<P>Silicone is a lubricant.<P>:-)<P>------------------<BR>Chuck Schwark<BR>The Philco Repair Bench at<BR> <BR> <A HREF="http://www.philcorepairbench.com" TARGET=_blank>http://www.philcorepairbench.com</A>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Tue 29, 2003 5:32 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 422
Location: E. Peoria. Ill,USA
Hi Chuck,<BR> How about I just lub up a germanium diode and use that one ;-)<BR>Take care<BR>Bud<BR><P>------------------<BR>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Tue 29, 2003 9:54 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3667
Location: Circleville, OH, USA
Yes, germanium, not solicon. Ge has a lower threshold and responds better to weak signals.<P>------------------<BR>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Wed 30, 2003 12:34 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2846
Location: Warwick,RI
Bud,<BR>If you need just one 1N34 send me an e-mail at radiorepair@mindspring.com. rather than your having to palce a minimum order for a tiny item like this with a distributor.<BR>Malcolm Leonard<P><BR>------------------<BR>


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 Post subject: Crystal diode replacement--with what????
PostPosted: Apr Wed 30, 2003 6:12 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 422
Location: E. Peoria. Ill,USA
Hey Malcolm,<BR> Thanks but another forum member contacted me yesterday and he's sending me some.<BR>Thanks again and take care<BR>Bud<BR> <P>------------------<BR>


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