sorgatz@ttidca.TTI.COM ( Avatar) (05/05/89)
In article <11170005@hpfcdj.HP.COM> myers@hpfcdj.HP.COM (Bob Myers) writes:
+As mentioned above, many minerals can be used - I seem to recall reading of
+a WW I (or II?) "survival tactic" which involved building yourself a crystal
+radio out of a lump of coal balanced on the edges of two razor blade nailed
+into a block of wood!
+
Another method for creating a diode semiconductor useful to this purpose is
to mount a razor blade flat against the breadboard (literally!) and use a
safety-pin as a carrier for a piece of graphite, ordinary pencil "lead"!
Again, not much current carry but enough to activate those fabulous megaohm
Philmore headphones! ..those were the days!
--
-Avatar-> (aka: Erik K. Sorgatz) KB6LUY +-------------------------+
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