Re: [CAD_CAM_EDM_DRO] Power supply question.....

Ok...... try to solve the transformer question with this final information:

(Secondary face of transformer)
I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~I
I 0--fuse-0 < 8.0v >0 I
I I
I I
I I
I I = no. of wires to each terminal I
I I
I II IIII II I
I O O O I
I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~I

I < 3.1v > I< 28.5v >I

I< 31.5v >I

Well, I think you got the picture now..... the bottom three terminals have
the heavy wire, while the top three have lighter gauge....not sure what the
fuse is for?

RC

----- Original Message -----
From: <JanRwl@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, April 23, 2002 8:37 PM
Subject: Re: [CAD_CAM_EDM_DRO] Power supply question.....


> In a message dated 23-Apr-02 04:58:42 Central Daylight Time,
asdf@...
> writes:
>
>
> > My question is, can one use any
> > combination of connection without being a problem?
>
>
> Wow, a "loaded" question! It depends on the combinations, of course!
>
> If I read your description of your transformer's secondary correctly, it
is
> NOT a "Center Tap", but a tap near one end of the winding! If the voltage
> between the ENDS of a winding are 32 VAC, then the voltage between the
"CT"
> and EITHER end will be 16 VAC!
>
> Can you see the "magnet wire" in the transformer that connects to these
> terminals, or are the connections to the "outside world" made to insulated
> "hook-up wire", so the joints are hidden? If you can actually see the
ends
> of the magnet-wire soldered to terminals to which you connect your
circuitry
> or voltmeter, is the wire-size (diameter) the same on the "end
connections",
> and there are TWO wires to the "CT"? Reason I am asking this is that I
> imagine you might have different windings or some such. A "CT" is NOT a C
> enter-Tap if the voltage is not "same" to EITHER "end terminal".
>
> You can use a "rectifier bridge" (or four suitably-large silicon diodes)
and
> ONLY the "end terminals" to give you "full-wave DC". Or, you can connect
a
> (real, actual) "CT" to ground, and then use a single silicon-diode in
series
> with EACH end-terminal, their cathodes connected, providing +, also
full-wave
> DC. There are disadvantages and ADvantages to each method. You kinda
hafta
> "know a bit of whatcha DOIN' with this" to go on!
>
> Lotsa luck! Jan Rowland, Old Troll
>
>
> [Non-text portions of this message have been removed]
>
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