Diode help... HELP! - test-drb@ccmp.vtda.org

22 Feb 2000

Actually, germanium diodes, e.g. 1N43A, 1N270, etc, have a forward voltage
on the order of 0.32 volts.  There are numerous SCHOTTKY diodes with
considerably lower forward voltage.  Check the DigiKey catalog for possible
candidates.  Their catalog lists forward voltage as a characteristic.

Dick

-----Original Message-----
From: Jack Noble &lt;apple(a)cmc.net&gt;
To: classiccmp(a)classiccmp.org &lt;classiccmp(a)classiccmp.org&gt;
Date: Tuesday, February 22, 2000 3:39 PM
Subject: Re: Diode help... HELP!

...
 Germanium diodes have the least amount of voltage drop
while conducting
(about .06 volts I think) and a popular one that should be readily available
...
 is the 1N34 or 1N34A.  The reason that diodes seem to
act funny on an
ohmmeter is because of the fwd voltage drop while conducting.  The silicon
diodes that you probably got at radio shack have a fwd drop of more than .5
volts and will appear as a high resistance to your meter even though they
are conducting.  Hope this helps

Noble
-----Original Message-----
From: Bill Sudbrink &lt;bill(a)chipware.com&gt;
To: classiccmp(a)classiccmp.org &lt;classiccmp(a)classiccmp.org&gt;
Date: Tuesday, February 22, 2000 1:44 PM
Subject: Diode help... HELP!

 Hi,

Once again demonstrating my vast quantities of ignorance...
I need a diode which completely blocks current in one direction
and presents as little resistance in the other direction
as possible.  I bought a fist full of little glass ones at
Radio Shack for 50 cents.  On my Ohm meter, they show no
conductance in one direction and 1400KOhm the other way.
What do I need to get?  RS (which is the only resource I
have available, I need them like _NOW_) has many different
kinds of diodes, ranging up to two dollars per pair.

Thanks,
Bill Sudbrink 