Old Soul

I did mention (temporary) rails fuses as desperate measure to save output mosfet, in case that Ge is gone Dodo

as I said - I had only one case of popcorn Ge, with 1T813, perfectly set and then gone Poof on first sight of signal at base

in fact , I had another one - when first testing Si option, but that was my mistake in fullest - I did put 2SC5200 of very dubious origin

in 1T813 episode, I'm sure that IRFP240 gone too, can't remember for 2SC5200 episode, but most likely it was same case

and yes, I didn't had rails fuses ...... which I was sure to arrange in T-Bed 2, pretty handy to disarm whichever channel I want, whenever I want

luckily - still didn't popped one, on T-Bed 2, very good, considering prices of part usually sitting in

anyway - those are the reasons why I'm having multipairs of output posts on T-Beds - pair pre-loudspeaker protection ( handy for measurements all the time, variac-ing or whatever) and pair post-loudspeaker protection

speakers, when used, are always post - protection, logically
 
if you need just one, getting best looking one from China markets is simplest option

if you need more, and for different scenarios, you're making your own
 

Attachments

  • LSP Protect.png
    LSP Protect.png
    311.9 KB · Views: 151
After inserting the naturally forgotten jumpers, it’s warming up with some ink spots and kenji jammer…
Hei, it sounds veryvery good.
First gasp and of course absolutely unqualified impression: I might prefer it over the sony vfet… but let us get to know each other a bit better! 😍
 

Attachments

  • 1006C99D-6B7C-4652-930A-F0DEC9A840C8.jpeg
    1006C99D-6B7C-4652-930A-F0DEC9A840C8.jpeg
    305.6 KB · Views: 119