[Boatanchors] Relay Repair - Demagnetization Question

[Glen Zook]

In theory, yes.  But, unfortunately, in reality, no!  There are all sorts of relays "out there" that, when run from DC, definitely get magnetized.  The "fix" is to reverse the connections periodically.  Now when run from AC the problem doesn't exist.

Glen, K9STH

Website:  http://k9sth.com


--- On Tue, 2/2/10, Ron <ronami at yahoo.com> wrote:

Relays are designed with very low coercivity (or remnance) cores. There is no need to ever demagnetize a relay.