Tony's latest traffo DIY build

[TonyTecson]

hard to tell from pictures alone....when i am unsure of the core on hand i assume they are noss....

goss are ussually 0.35mm or thinner and are also pin striped...

 

[rolandong]

sir Tony, YGPM

 

[TonyTecson]

i have ready made traffos but not with center taps....call me 7385635 of you have time...

 

[lexx21]

I will use some steel wool to remove the coating on this one lamination and see what is underneath.

I am really unsure now what thickness they are. I ran a few tests with my caliper. On a piece of standard printer paper I was getting between .22 and .09 for thickness. Each time I turned it off, turned it on, then zero'ed it, I would get something completely different measuring the same piece of paper in the same place.

 

[lexx21]

definitely not pin striped, but it is silicone steel. So noss it is then. I guess these will make good chokes and power transformers.

 

[TonyTecson]

yes.....

 

[donnyab]

tony have you ever potted transformers using resin etc, if so, any photos ?

 

[TonyTecson]

no...

 

[saminnografix]

I will use some steel wool to remove the coating on this one lamination and see what is underneath.

I am really unsure now what thickness they are. I ran a few tests with my caliper. On a piece of standard printer paper I was getting between .22 and .09 for thickness. Each time I turned it off, turned it on, then zero'ed it, I would get something completely different measuring the same piece of paper in the same place.

hi lexx21
may i just suggest a little u may have relied on your caliper i think it was digital type just do it manually coz for me i always use the manual and digital to be sure.
i would suggest you clean atleast 10 pcs of it joined then make the measurement if 10pcs will have thickness of 3.5mm divide by 10, thus your core thickness was 0.35mm per piece.
same as if 10pcs. will have 5mm thick then divide 10 that is 0.5mm per piece.
i hope that helps.

 

[lexx21]

One of my next purchases will be a good caliper. Good idea though. What I am finding with my caliper is that accuracy falls when you get to the right of the decimal point. I think a good metric dial caliper is in order.

 

[TonyTecson]

bought these a couple of months ago from china....

 

[TonyTecson]

power traffo for tube preamp, end bells and legs are Deeco's, 0.35mm H18 core ...core size is 1 1/8 stacked 40 mm thick...

 

[TonyTecson]

rewinding machine from Pakistan, thanks to Norman Santos.......note the 13mm shafting compared to the 10 mm of the china rewinder...
the shaft can carry heavier coils....

 

[rolandong]

Gorgeous traffo sir Tony, what's the secondary winding voltage?

 

[TonyTecson]

250volts at 100mA......thanks Roland....i still have some if you need those...

 

[Kay Pirinha]

rewinding machine from Pakistan, thanks to Norman Santos.......note the 13mm shafting compared to the 10 mm of the china rewinder...
the shaft can carry heavier coils....

Guess you still need individual prismatic mandrels for each bobbin?


Best regards!

 

[TonyTecson]

Guess you still need individual prismatic mandrels for each bobbin?


Best regards!

yes. i am making several more wooden manrels for 2 1/4 to 3 inch center leg cores...

 

[saminnografix]

rewinding machine from Pakistan, thanks to Norman Santos.......note the 13mm shafting compared to the 10 mm of the china rewinder...
the shaft can carry heavier coils....

...wish i can have one...

 

[donnyab]

what is the exact source/link for this machine to check out price or purchase details ?

 

[TonyTecson]

sorry. i have no links.....
that rewinder was a gift to me by Norman working in the middle east,