IRC server down

[Vu Pham]

> -----Original Message-----
> From: linux-users-bounces at linux-sxs.org 
> [mailto:linux-users-bounces at linux-sxs.org] On Behalf Of David Bandel
> Sent: Saturday, January 15, 2005 6:26 AM
> To: Linux tips and tricks
> Subject: Re: IRC server down

[...] 
> > I guess the ups is not good enough, or the power strike too strong.
> 
> Not the length or strength.  It's the rise time.  When you 
> get a spike, no matter how high, it takes time to reach that 
> upper voltage. 
> All UPSs and surge protectors have what's called a "clamping time". 
> It's the time they require to react to the rising voltage.
> 
> If rise time is too fast (less than clamping time), and the 
> spike too high, you have a problem (usually manifested in the 
> magical smoke being let out of your  "protected" device).
> 
> This is where capacitive banks help, but most UPSs are 
> switching models so the batteries (capacitors) don't do 
> anything to slow down the rise time.
> 

David, thanks for the explanation. Interesting to know about that.

Vu