Re: [CAD_CAM_EDM_DRO] Re: Center tapped transformer

In a message dated 10/25/2002 1:19:42 AM Central Standard Time,
jagco1998@... writes:

> "if you can split the center tap secondary into two isolated windings..."
> Would you care to elaborate how one would go about doing so? Just
> incase I get the urge to electrocute myself trying to one day!
>

Bill: PLEASE forgive if this is O.T.!!!!!!!!!!!!!!

Jim: On some smaller newer transformers, the windings are "spun" on a nylon
bobbin into which the iron "stampings" are installed after winding. On
those, there is usually solder-terminals or "push-on" tags to which the
"magnet wire" is soldered. Often, particularly on the thicker secondary
(low-V, higher-A) secondaries, you can actually SEE there are "TWO ends"
wrapped around this solder-terminal, and with great care, experience, some
solder-wick, and general "been there, done that", one can unsolder these
wire-ends, so that the once-ONE-termina C.T. is now TWO.

Now, if your transformer's coil is covered with "brown paper" and has colored
PVC lead-wires exiting it, if you are VERY lucky, all the "soldering" to the
secondary-ends of the windings have been made "outside", and you can gain
access to these by deftly cutting the outer layer of paper away to reveal the
soldering to these lead-wires. Same story: You can probably see TWO "magnet
wires" soldered to the C.T. lead-wire. Unsolder, get ANOTHER like lead-wire
(of some nifty diffent color?), solder that to ONE of those, and the
remaining salvaged lead-wire to the other.

"Wind your own transformer lesson on-line #1 is now ended". Jan Rowland

To the last line in your question: SURELY you have sense enough to
disconnect subject transformer from the AC-source before doing this
work??????


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