48 to 12 volt conversion [RE-wrenches]

[Ray Walters]

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Jeff Clearwater wrote:

> Yes, all good points.  I'm convinced to buy LEDs when I can afford it 
> and go 120 VAC when possible and buy thin lite type 12 volt when 
> applicable.   But still my question is:   are the 12 V CFs you bought 
> the same ones they sell now?

I can't answer that. The last ones I bought were from 2002. You'll need 
to ask AEE. The Edison contact is similar to another favorite hated 
connector: the cigarette lighter plug. I've seen those completely melt 
down at a sustained 5 amps. The melting of the plastic on the end of the 
DC CF is not speculation, it is a reality. I have several  CFs visibly 
melted around the contact tip.

>   Doesn't take much to connect 2 amps without heat.

It also doesn't take much to get measurable volt drop and heating with 2 
amps. If I put DC CFs in again, I would definitely put the circuit on a 
LVD set at 11.6 v or higher. 
The other comment about a DC light in the equipment room: we try to do a 
pullchain (DC rated)  Incandescent Light over every power board. They 
act as a crude volt meter too! (mmm pretty dim in here,  must be low 
batteries)


Ray

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