Hello Manfred,
Thanks for clarifying that, I have the 20 turn winding with the
grounded end coming out on the side of the core with no terminal pins
and joining the 8 turn winding on the side with the pins. I can't see
it will affect things though. Whilst I have your magic ear maybe you
can advise on the next heating issue please? With two amps combined
the centre toroidal core and winding get pretty hot if I use OPERA
with its 32 minute transmission. The two end cores and windings stay
cool. I wonder if you can suggest a better core or whatever please?
The LPF is detailed here, and they are in individual sealed die cast
alloy boxes, so air flow is none existent, but I suspect even if I
mill two openings in the centre box and put mesh over the apertures it
will still be marginal. A fan sound like a kludge. Ideas very welcome
indeed!!
http://www.w1vd.com/LPF.html The schematic is in the link.
On Monday, June 12, 2017, you wrote:
> Hi Chris,
> well, I'm glad that the transformer project was successful.
>> I believe I am being a bit thick and probably not
>> understanding how you intended the wires to appear off the bobbin. If
>> I follow your instruction verbatim, as I believe they are intended, I
>> would end up not being able to have full turns on the 20 turn winding,
>> as bringing them out on opposing sides would add(or subtract a half
>> turn from one of them.
> Indeed you misunderstoff what I meant. What I meant was winding only
> full turns, never half turns, and by "bringing out the wire on opposing
> sides", the "sides" I meant are the side walls of the bobbin. So, if you
> place the bobbin on the desk in front of jyou such that it can roll away
> or toward you, left and right are the two sides I mean. NOT with the
> bobbin lying flat on its side!
> It's the orientation from which you look at a bobbin while winding it in
> a machine.
> So the two wires of a winding always come out through the same core opening.
> Manfred
--
Best regards,
Chris mailto:chris@chriswilson.tv
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