The Other 13E1 SE-OTL

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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Mon Mar 11, 2019 7:01 pm

Mike H wrote:
Mon Mar 11, 2019 3:23 pm
I like the resin filled toroids with holes, did they come like that?
Yes, the two black ones are 'Audio Grade' from Toroidy in Poland - they've got a big range and are very good value too.

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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Tue Mar 12, 2019 8:14 pm

I got the updated PCBs today so I should be able to make some good progress over the weekend.

Steve, I have a pair of boards for your rebuild but I won't be able to get them posted before Saturday because of work commitments.

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Re: The Other 13E1 SE-OTL

Post by Cressy Snr » Tue Mar 12, 2019 8:31 pm

Ray P wrote:
Tue Mar 12, 2019 8:14 pm

Steve, I have a pair of boards for your rebuild but I won't be able to get them posted before Saturday because of work commitments.
Cheers Ray :)
Why, for example, should a group of simple, stable compounds of carbon, hydrogen, oxygen and nitrogen struggle for billions of years to organise themselves into a professor of chemistry? What's the motive? (Robert M Pirsig)

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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Sat Mar 16, 2019 10:52 am

Cressy Snr wrote:
Tue Mar 12, 2019 8:31 pm
Ray P wrote:
Tue Mar 12, 2019 8:14 pm

Steve, I have a pair of boards for your rebuild but I won't be able to get them posted before Saturday because of work commitments.
Cheers Ray :)
Hi Steve, did you see the PM about sending you the new PCBs?

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Re: The Other 13E1 SE-OTL

Post by Cressy Snr » Sat Mar 16, 2019 11:28 am

Ray P wrote:
Sat Mar 16, 2019 10:52 am
Cressy Snr wrote:
Tue Mar 12, 2019 8:31 pm
Ray P wrote:
Tue Mar 12, 2019 8:14 pm

Steve, I have a pair of boards for your rebuild but I won't be able to get them posted before Saturday because of work commitments.
Cheers Ray :)
Hi Steve, did you see the PM about sending you the new PCBs?
Hi Ray,
I have the PM from Sun 3rd March, but nothing else since then
Why, for example, should a group of simple, stable compounds of carbon, hydrogen, oxygen and nitrogen struggle for billions of years to organise themselves into a professor of chemistry? What's the motive? (Robert M Pirsig)

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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Sat Mar 16, 2019 4:02 pm

Ah! Looks like I had a senior moment as I remember typing a PM to you but just checked and it's not in my Sent box.

Anyway, in another of those moments I accidentally deleted the PM with your address. If you send me a PM with it I'll get the PCBs in the post on Monday.

Sorry about that.

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Re: The Other 13E1 SE-OTL

Post by Cressy Snr » Sat Mar 16, 2019 4:09 pm

Ray, you have a PM.
Why, for example, should a group of simple, stable compounds of carbon, hydrogen, oxygen and nitrogen struggle for billions of years to organise themselves into a professor of chemistry? What's the motive? (Robert M Pirsig)

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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Sat Mar 16, 2019 4:27 pm

I got the PM Steve, cheers.

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Re: The Other 13E1 SE-OTL

Post by Ray P » Sun Mar 31, 2019 9:41 pm

I suspect I may be over-thinking this but probably best to check...

I have a toroid with two secondary windings that I need to connect in series. Each secondary is identified by the colour of its sleeving on the flying leads but the sleeving is the same colour at each end of each secondary so let's say white-white = sec-1 and black-black =sec-2. I have no other information.

To connect them in series, does it matter which end of the white sec-1 connects to which end of the black sec-2?

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Re: The Other 13E1 SE-OTL

Post by little eddy » Sun Mar 31, 2019 9:48 pm

Leave them open circuit and connect one wire from each pair. Measure the voltage across the other two ends. If it is double the individual winding voltage then that's right. If you have them the wrong way round, the voltage will be around zero.
Thorens TD-125 & 'Snail' phono/pre, NAS/SBT, CS4398 DAC, Rocky KT66 amp, still messing with OBs.

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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Sun Mar 31, 2019 9:55 pm

little eddy wrote:
Sun Mar 31, 2019 9:48 pm
Leave them open circuit and connect one wire from each pair. Measure the voltage across the other two ends. If it is double the individual winding voltage then that's right. If you have them the wrong way round, the voltage will be around zero.
Cheers, I'll do that.

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Re: The Other 13E1 SE-OTL

Post by simon » Mon Apr 01, 2019 12:30 pm

Unless I've misunderstood the question this might be interesting:

https://www.diyaudio.com/forums/power-s ... rator.html

It's about phase of the windings rather than their DCR.

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Mike H
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Re: The Other 13E1 SE-OTL

Post by Mike H » Mon Apr 01, 2019 10:54 pm

little eddy wrote:
Sun Mar 31, 2019 9:48 pm
Leave them open circuit and connect one wire from each pair. Measure the voltage across the other two ends. If it is double the individual winding voltage then that's right. If you have them the wrong way round, the voltage will be around zero.
Image this

Can't see the pictures on t'other so PhaseDots is still a mystery :D
 
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Ray P
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Re: The Other 13E1 SE-OTL

Post by Ray P » Mon Apr 22, 2019 9:52 pm

In spite of family and garden tidying commitments I finally found some time to progress the project a little today. Hooked up the various transformers in the power supply chassis and measured them without any load just to make check the connections where I'm parallel or serial connecting secondary windings. All good so next is to assemble the delay circuit for the B+ supply and hook everything up to the rear panel conenctor.

Image

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Re: The Other 13E1 SE-OTL

Post by Mike H » Tue Apr 23, 2019 3:38 pm

Interesting, lot of family tidying to do is there? :lol:
 
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