On Wed, 27 Feb 2013 21:24:41 -0800 (PST), klem kedidelhopper
wrote:


*As for the 24 v AC, the outter legs will supply that to the out board
device. Make sure the AC legs do not come in contact with either grd or
DC out..

* * * * * * * * * * * * * * * * *o * * * *o
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * * * * * * * * * * * *| * * * * | to your 24V AC device
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * * * * * * * * * * * *| * * * * |
* * * * * * *+ * * * * * * * * * | * * * * |
* * * * * * * --------------+. ,-o---------|-----|-+--+
* * * * * * * * * * * * * * *)|( * * * * * | * * * * * | * *18DC
* * * * * * * * * * * * * * *)|( * * * * * | * * * * * +------++
* * * * Line Voltage * * * *-. ,-+----+| * | * * * * * | * * ===
* * * * * * * * * * * * * * *)|( * * *=== *| * * * * * | * * /-\
* * * * * * * * * * * * * * *)|( * * *GND *| * * * * * | * * *|
* * * * * * *+-------------+-' '+----------o-----|+----+ * *===
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *GND
(created by AACircuit v1.28.6 beta 04/19/05www.tech-chat.de)

*Unless I missed something, I don't see a problem?
Jamie

I'm not sure if my last reply worked so I'll try it again. I know that
it's very difficult when all we can use here is text but I'm afraid
that I just can't understand, (read) your schematic. From you
description however it appears to be the FW arrangement that I've
already tried and got 35 V out of after I connected up the filter. Is
there any way to make your diagram any more readable in this medium?
Thanks, Lenny

* THe FW you tried was a 4 diode bridge, this is a 2 diode full wave config.
* *THe difference being is, the CT (Center tap) is your common, the
negative terminal and where the Cathode of the 2 diodes come together
are the (+) terminal which will be around 18VDC with Cap attached

* If you truly do have a 24 volt transformer with CT, this means you'll
get 12 Volts from each outer leg with respect to the CT. Because they
are out of phase with each other (180), this is a split phase
configuration, like seen in residential pole pigs in the USA.

* If you have done this and gotten 36 volts, then you actually have a
48V transformer with CT

Jamie

What you're referring to is a 12VCT transformer. Connecting either a
bridge and not using a center tap or just two diodes across the full
secondary with cathodes tied together using CT as common connected to
an output filter will yield 18VDC. A 24 V transformer under the same
circumstances will produce 36VDC. I've tried it and it does. Lenny.


Two questions:

Do you have LTSpice?

Can you read alt.binaries.schematics.electronic?

If the answer in no in both cases, get LTSpice.

The .asc files are very handy for this kind of discussion.

?-)