[Amps] Metcal soldering iron and microscopes

[rlm]

>On Monday 15 September 2003 16:53, John T. M. Lyles wrote:
>snip
>>.... I also got a Metcal RF soldering iron for about
>> $25 from a local junk dealer. 
>How to ruin someone's day!!! :-) I bought two of these for work, at full 
>price 
>:-(((
>
>Seriously, I think they're great except that I've had several bits go 
>intermittent long before they were worn out. I suspected the contacts in the 
>handle but I'm far from certain.
>
€  A small MOV across the contacts will protect the contacts from 
arc-damage.