[time-nuts] [volt-nuts] Safe power-up. was (Solartron 7075 ...)
warrensjmail-one at yahoo.com
Tue Oct 11 13:32:53 UTC 2011
Peter Gottlieb nerd at verizon.net wrote:
> 99% of the time I just plug things in and see what happens.
> I do fix a lot of stuff, though,
I have to wonder if there is more than a casual cause and effect
relationship between those two statements.
I've seen a strong relationship between the wasted time spent fixing extra
things that where fried unnecessary, with how careful one is at initial turn
Monitoring the wattage, using a Kill-A-Watt meter when turning on Old things
can save 'futzing time' in the long run.
And the most time saving thing I've found besides "apply power and throw it
out if there is smoke or nothing",
is to do a complete visual inspection inside, to insure things are still the
way they where designed to be, BEFORE applying any power.
Yes Variac, My spell checker thanks you for teaching it the correct
I find it one of the more useful pieces of test equipipment when
checking/modifying things to get max Nut-Precision from them.
If changing the line voltage or the temperature a little causes ANY
measurable effect on performance,
then for me, it's time to change something and made it better, which can
often be done with just simple changes (and a lot of futzing time).
Peter Gottlieb nerd at verizon.net
Hmmm. 99% of the time I just plug things in and see what happens. That's
they were designed to do. If something pops I fix it from there. If a fuse
keeps blowing I use the light bulb in series trick.
On older tube gear I do "softly" bring it up with the variable
(Variac, Powerstat), but that's only really because of the capacitors.
Just my 2 cents. I do fix a lot of stuff, though, and don't like to waste
futzing when I don't have to. Weak parts get replaced. If they were likely
fail enough to do so when I just plug something in, they need replacing
On 10/11/2011 1:14 AM, David J Taylor wrote:
>> The proper use of the variact's output voltage has a learning curve,
>> equipment with switchers behave differently than things with linearly
> It's likely "Variac" you mean, not "variact"
More information about the time-nuts