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Alright thank you for the detailed response and link, the one I used looks extremely similar, in fact without the other schema in front of me I would say it's the same.
I used a 1k pot, and had done the ekl en1230 with a vishay 520N. Any chance the mosfet conversion is flat out incompatible with this variable mod?

Well only time will tell if the transformer will fail prematurely, 4 amp inline fuse it is.
I'm using a 12v "203 watt" 16.5 amp power supply with internal short circuit protection, if a short occurs the psu will go into fault-mode and needs to be unplugged to reset it. I'm suspecting there was no direct short detected by the psu, but the current draw was enough to damage the transformer because there was a short in the radio, and a 3 or 4 amp fuse would have blown before i released the magic smoke.

Sometimes the lesson must be learned through painful experience, well i'm off to get an inline fuse holder and some fuses!

<blockquote data-quote="LeapFrog" data-source="post: 551463" data-attributes="member: 46697">Alright thank you for the detailed response and link, the one I used looks extremely similar, in fact without the other schema in front of me I would say it&#039;s the same.I used a 1k pot, and had done the ekl en1230 with a vishay 520N. Any chance the mosfet conversion is flat out incompatible with this variable mod?Well only time will tell if the transformer will fail prematurely, 4 amp inline fuse it is.&nbsp; I&#039;m using a 12v &quot;203 watt&quot; 16.5 amp power supply with internal short circuit protection, if a short occurs the psu will go into fault-mode and needs to be unplugged to reset it.&nbsp; I&#039;m suspecting there was no direct short detected by the psu, but the current draw was enough to damage the transformer because there was a short in the radio, and a 3 or 4&nbsp; amp fuse would have blown before i released the magic smoke. Sometimes the lesson must be learned through painful experience, well i&#039;m off to get an inline fuse holder and some fuses!&nbsp; &nbsp; <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" /></blockquote>

[QUOTE="LeapFrog, post: 551463, member: 46697"] Alright thank you for the detailed response and link, the one I used looks extremely similar, in fact without the other schema in front of me I would say it's the same. I used a 1k pot, and had done the ekl en1230 with a vishay 520N. Any chance the mosfet conversion is flat out incompatible with this variable mod? Well only time will tell if the transformer will fail prematurely, 4 amp inline fuse it is. I'm using a 12v "203 watt" 16.5 amp power supply with internal short circuit protection, if a short occurs the psu will go into fault-mode and needs to be unplugged to reset it. I'm suspecting there was no direct short detected by the psu, but the current draw was enough to damage the transformer because there was a short in the radio, and a 3 or 4 amp fuse would have blown before i released the magic smoke. Sometimes the lesson must be learned through painful experience, well i'm off to get an inline fuse holder and some fuses! :) [/QUOTE]

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