Hello Prasi,
I finally recover my last PCB (my Lenovo AIO did not work anymore, but the hard disk is OK ?) and corrected the errors found by snapper
I also added a jumper to use the negative input for the feedback or a differential input version...
I am also working on some cosmetic change.
Cheers,
Marc
Let’s not forget the TENA amplifier that Marc did not build (see post #826) Perhaps it could be a memorial to him.
https://www.diyaudio.com/forums/att...182310-el34-baby-huey-amplifier-kt120-sch-pdf
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Yes that's a real sad thing about Marc, such a loss.
As for the relay. I looked for one as well when I built mine, could not find anything I was satisfied with, so installed the specified one from the parts list. I fully expected it to fail, if not quickly at least over time.
Almost a year later, I use my amp almost every day as it's in a workout room that we use all the time. It gets fires up almost every day, some times two or three times per day.
I'm glad to say I have not had any problems with the relay! Not to say that it will last forever, it could go next time I turn it on. But I have been surprise so far at how flawlessly it has worked.
Maybe Marc knew something we don't know. He actually knew a lot I don't know, but that's a different story. RIP
gabo
As for the relay. I looked for one as well when I built mine, could not find anything I was satisfied with, so installed the specified one from the parts list. I fully expected it to fail, if not quickly at least over time.
Almost a year later, I use my amp almost every day as it's in a workout room that we use all the time. It gets fires up almost every day, some times two or three times per day.
I'm glad to say I have not had any problems with the relay! Not to say that it will last forever, it could go next time I turn it on. But I have been surprise so far at how flawlessly it has worked.
Maybe Marc knew something we don't know. He actually knew a lot I don't know, but that's a different story. RIP
gabo
Very sad news. RIP Marc.
Not to dismiss this loss, but I’ve seen a lot of talk about the relay and wondered if there is a consensus on a sensible one? I’m starting to collect parts and need to put in a fairly large order to Mouser.
I preferred to play it safe and I mounted a high voltage relay adapted from Te Connectivity ref: 2-1904058-7 but you have to replace the 2n3906 transistor for a more powerful one like the BD140
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