[Boatanchors] MOV Choice for 120 VAC and 230 VAC

[David C. Hallam]

No, it is not a good idea to install MOV's across the primary.  MOV's 
have a notoriously high failure rate and the failure mode is usually to 
short.

This issue was discussed at length on the AMPS reflector recently. 
Check their archives.

David
KW4DH

LEE BAHR wrote:
> Is it wise to install a modern MOV across the primary of a boatanchor's 
> power transformer input coil?  If so, which ones should I buy at Mouser out 
> of the zillion of them for sale there.  (I'd be interested in both those 
> used on 120 volts AC well as 230 volts AC).
> 
> I can't figure out which to buy.  Thanks for any input.  (I need to place an 
> order at Mouser for some other stuff and will ad MOVs at the same time).
> 
> Lee, w0vt 
> 
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