Old Soul

[myleftear]

Thank you twitchie! (My first fugly, woohoo!)

Yes it’s a mini dissipante 3U 300 deep. (Given the easy temperature, I‘d dare to even go 2U on this, except for the missing space—nema problema with an external psu of course)

 

[Zen Mod]

Fugly!

nema problema .....

 

[andynor]

How much can these bastards be pushed wrt dissipation per device, of course given chewing gum or the likes as thermal conductor?

getting more and more interested…

 

[myleftear]

chewing gum

Chewing gum is for sissies! Use bogey instead

 

[myleftear]

Fugly!

nema problema .....

Falla!

 

[Zen Mod]

How much can these bastards be pushed wrt dissipation per device, of course given chewing gum or the likes as thermal conductor?

getting more and more interested…

I gave you my recipe

not that is best one or only one

though, I'm already notorious - regularly forgetting to turn fan On on my T-Beds, so everything ending redchillihot, for who knows how long

that happened to my Old Soul too .... and I was relieved that 2N1099 survived , no gurgle

though, of lately, I'm avoiding to turn fan(s) Off

 

[myleftear]

Butbutbut, if mine barely get warmer than 40-something °C while running at 85mV, and went up to abovish 50°C at 110mV, how hard are you running them then?

 

[Zen Mod]

25V rails, 1A Iq

they were X*?@! ....... and survived

though - I'm saying - they survived, but I'm not saying that I would dare to use them that way in prolonged time

ZM's Chicken

 

[Zen Mod]

hehehe

 

[myleftear]

That's funny. Yours ran X*?@! although you have some helluva heatsink...

 

[Zen Mod]

no
they're helluva with fan

tall sinks are not that efficient as they are if you cut them in half and put same heat in them

besides, it was convenient (first page pics) to mount my GE Biguns on very top end of htsnk..... not happiest place, when fanless

 

[myleftear]

Ok. Physics is weird.

 

[Zen Mod]

Papa is Physicist

 

[myleftear]

Ok, but I wrote physics (not -ist)
😁
(I‘ll stop cluttering your thread here, ok? ZM, it was a greag adventurous journey, many many thanks for this and the old soul! <- serious)

 

[andynor]

Papa is Physicist

the best plumbers around!!

Edit: never was good with quotes, and once I learned it, forum was upgraded. Looks OK now

 

[Dennis Hui]

If only I did better in physics classes I might be able to fix my leaky kitchen faucet...

 

[flocchini]

If only I did better in physics classes I might be able to fix my leaky kitchen faucet...

An absolute must for physics guys that hang around a cyclotron - find and fix water leaks

 

[Dennis Hui]

A quick update: Over the weekend I replaced the 2n1099 in the broken channel as well as the mosfets to avoid any potential issues. Bias was uneventful.
I left it playing on test speakers for about 15 hours with rail fuses. After that, I removed the temp wiring with the fuses and ran for a few more hours.

I noticed that with the lid on and running for a while, the quiescent current drifted down a bit; I'll probably leave it as is.

Cheers,
Dennis

 

[flocchini]

A quick update: Over the weekend I replaced the 2n1099 in the broken channel as well as the mosfets to avoid any potential issues. Bias was uneventful.
I left it playing on test speakers for about 15 hours with rail fuses. After that, I removed the temp wiring with the fuses and ran for a few more hours.

I noticed that with the lid on and running for a while, the quiescent current drifted down a bit; I'll probably leave it as is.

Cheers,
Dennis

View attachment 1025428

 

[Zen Mod]

Dennis - sound?