Well, if nothing worked out still, try to talk to this guy. Surely he will insist on custom built but you may as well convince him to sell just cores or give you a source.
Ausgangsbertrager / Transformatoren / Rhren-Verstaerker-Upgrade / Steuerung / Automation
Ausgangsbertrager / Transformatoren / Rhren-Verstaerker-Upgrade / Steuerung / Automation
Aah nice thx alex, ! i already contacted some companys in the netherlands but they are not looking forward to sel anything so it seems, since they do not reply... hate wescap!
Be aware that if you use a laminated core, the laminations cannot be thick. For reasonable frequency capability, you need to consider this. Otherwise, core eddy losses can be high.
At the higher frequencies, a thick wire will also suffer proximity losses. There will be a tradeoff, where a thinner wire may perform better at 20Khz.
jn
At the higher frequencies, a thick wire will also suffer proximity losses. There will be a tradeoff, where a thinner wire may perform better at 20Khz.
jn
It's true for power x-formers operating at reasonably high flux density.
0.05 mm lamination is good for 1 Tesla at 1000 Hz in power applications.
Good audio x-former has flux density of 0.3 T at 20..30 Hz becoming 0.03 T at 200..300 Hz not mentioning 2000 of 20000 Hz.
So, in audio applications, flux density is irrelevant from 200-300 Hz up. 0.25-.35 mm lamination will suffice.
0.05 mm lamination is good for 1 Tesla at 1000 Hz in power applications.
Good audio x-former has flux density of 0.3 T at 20..30 Hz becoming 0.03 T at 200..300 Hz not mentioning 2000 of 20000 Hz.
So, in audio applications, flux density is irrelevant from 200-300 Hz up. 0.25-.35 mm lamination will suffice.
Alec i contacted that tranformer shop, he was verry fast in replying, asked me wich core i needed , hope he can get SU60a's 🙂
I got a price for the cores from the tubesound site. 260 euro for 10 pieces of SU60a, without straps and bobines. so can easy add 25 for each trannie. and without shipping. shipping can be pricey with all that steel 🙂 at least someone gives a price thats a good start. still think it has to go down. i will contact the person i wind for, i asked him early where he got al his cores but he was not really wanted to share that i believe, i will give it another shot.
i also will call wescap on monday since they dont react on my email. calling usually works
they only have power cores 0.3 mm thick laminates, but as alex mentioned it should be ok for mid/high frequency
i also will call wescap on monday since they dont react on my email. calling usually works
they only have power cores 0.3 mm thick laminates, but as alex mentioned it should be ok for mid/high frequency
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hmm got the total price, 10 c cores with bobines and straps comes down to 400 euro!!! thats includes vat and shipping. , most shocking the straps are almost 4 euro a piece 🙂
so for 40 euro you got steel with bobines🙂 now we still have to add the copper, and my time 🙂
so for 40 euro you got steel with bobines🙂 now we still have to add the copper, and my time 🙂
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