Re: gEDA-user: Contact reliability

[Karel Kulhavy <clock@xxxxxxxxxxxxx>]

On Wed, Jan 19, 2005 at 01:36:21PM -0600, Bert Douglas wrote:
> Karel Kulhavy wrote:
> 
> >On Wed, Jan 19, 2005 at 01:01:51PM -0600, Bert Douglas wrote:
> >
> >>The way that you guarrantee contact reliability is by forcing current to 
> >>flow, every time the contact points are moved.  This causes microscopic 
> >>welds.
> >
> >
> >But when I have 10Mhz broadband signals with 700mVpp amplitude I probably
> >can't weld them together. Or is there some trick even for this situation?
> >
> >Cl
> >
> 
> Somehow you have to force a DC current of perhaps a few amperes.  This 
> only needs to be done for a short period of time.  Less than 1 second.

And what is the voltage at which even the thickest layer of oxides is guaranteed
to break through?

Cl<