"M. J. Powell" wrote:

In message
, Geoffrey
Sinclair writes

snip

Method 3: making the shell body part of a resonant circuit and
detecting frequency changes.

Should be fun lugging the fused shells around metal guns.

IIRC the fuse was inactive until fired. The shock of firing broke a
glass cell containing the battery acid, the battery then produced the
required voltage.

Mike

Jesus...I'd hate to be the second guy to accidentally drop the
damned thing...

--

-Gord.

Keep in mind that I'm an expert with
questions, so if you have any, fire
away.

Be aware however, that answers
quite often give me trouble.