by "keithr" <keithr@[EMAIL PROTECTED]
>
Apr 23, 2008 at 10:41 AM
"Iain Churches" <IainNG@[EMAIL PROTECTED]
> wrote in message
news:EwpPj.340962$gP.255193@[EMAIL PROTECTED]
>
> This whole idea of the usefulness of current regulation
> came to me when I was running a prototype amp
> from a bench power supply, and noticed the huge
> current drawn by the cold heaters.
>
Same as any hot piece of wire, it is the reason that incandescent light
globes blow at switch on 99% of the time.
If you feel that this is im****tant, then (assuming parallel feed) you
either
need a current limiter for each tube or a single voltage regulator that
ramps up the voltage over a second or two at switch on.
Keith
