Sam wrote:
On Fri, 11 Jan 2008 15:14:04 +0000, John Rumm
wrote:

Might be worth considering what sort of load you are switching with the
microswitch. Often people don't bother fitting snubber circuits when
they are controlling inductive loads. This can lead to premature wear on
the microswitch contacts.

Sorry, what is a snubber circuit?

A circuit that helps dissipate the big spike of voltage that is
generated when you switch an inductive load. At its simplest it can be a
metal oxide varistor suppression type device (cheap at maplin).

There is an example of a more sophisticated circuit used for protecting
the relatively delicate contacts of a reed switch shown he

http://wiki.diyfaq.org.uk/index.php?...nk#Flow_Switch

--
Cheers,

John.

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