Transformer repairs

Roy J. Tellason rtellason at
Sat May 31 19:43:16 CDT 2008

On Saturday 31 May 2008 11:30, Patrick Finnegan wrote:
> On Friday 30 May 2008, Tony Duell wrote:
> > > > After working on a SMPSU (or any power supply for that matter,
> > > > but especially a switcher), I usually power it up to test
> > > > throught a light-bulb.  [...]  Has saved me from "secondary
> > > > catastrophic failures" on more than one occation.
> > >
> > > And I've heard people talk about banning incandescent bulbs
> > > entirely.
> >
> > Indeed...
> I don't see what the problem is.  There are much more efficient methods
> of lighting, than the one that Edison worked a lot on over 100 years
> ago.

The problem is that there are applications for these bulbs that aren't 
primarily lighting, and we're not going to be able to get a hold of them.

> In addition to compact fluorescent lamps, you can get LED-based bulbs,
> halogen lamps (which still are effectively incandescent, but a bit
> better), and various gas-discharge lamps.

"Better" being a relative term.  Those halogen bulbs have advantages and 
disadvantages both.  And while CF bulbs are becoming somewhat common, LED, 
and gas-discharge lamps are both uncommon and expensive,  and not similar in 
their characteristics (either electrical _or_ lighting) to incandescent 
bulbs.  This is gonna cost,  a bunch,  and  it won't work as well (in some 
cases) as what's in place now.

Yes,  we have CF bulbs around here.  The one lamp that gets used most is one 
that took a lot of getting used to,  because it's a different spectrum.  In 
another case there's a fixture here that they don't work reliably in,  and 
since we're renting it's not an option to change the fixture.  In another 
case,  it's *way* brighter than the incandescent bulb it replaced.  And 
they're not dimmable.

Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin

More information about the cctalk mailing list