🚀 go-pugleaf

scottcr@wkuvx1.bitnet wrote:
: In article <1993Jan21.101200.8651@mr.med.ge.com>, szopinsk@picard.med.ge.com (Jerry Szopinski Mfg 4-6983) writes:
: 
: > The voltage drop across the 1N4148 diode depends on what type of
: > semiconductor material it is made of.  If the diode is made of
: > germanium (no, not the flowers) the drop is around 0.7V;
: 
: What? lets try .2 -.3 for Germanium.
: 
: > if it
: > is made of silicon then the drop is around 0.5V.
: 
: How about .6 - .7   ?
: > 
: > The 1N4148 is usually used in computer applications and most
: > general purpose circuit board applications where small currents
: > are used.  I agree that the 1N4001 would be a better diode for
: > this particular application.
: > 
: > 
: > Jerry
: > 
: By the way, a 4148 (at least used to be) silicon.



O.K., people, I made a mistake.  I knew that there was a difference in
the voltage drops between germanium and silicon diodes, I just didn't
remember which went with which.  Sorry.

But I have seen/used germanium 1N4148s.  I was working on some military
applications a couple of years ago, so the germaniums might be MIL-spec'd.
If my memory serves me right there is a physical size difference between
the two, but I don't remember which is which.


Jerry

"It riles them to believe that you perceive the web they weave and keep on
thinking free!"  --  Moody Blues


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