Live Lab Hangout #1.1 Posted

Status
Not open for further replies.
Jump to Latest
#141
Michael Rothacher said:
And, if you guys scoop all these up, be sure to save a pair for me. 🙂

I'll have additional info on the next hangout...whenever that happens.
Click to expand...

Hi Michael and Diyers

Excellent they are one more sit´s reference to play with 182ES.
Ok imagine they are cheap birds and in stock on Mouser
Thanks for test councils Michael and to Psz to clarify doubts.
Let´s back to working sits on my table 5 pcs only not full box.
Michael i can share my bread and cheese one pair for Lab Hangout benefit.
Could be better pm this evening via email ?
:cheers:
Christophe
 
#144
Michael Rothacher said:
I have good news.

PSz sent me some of his 2SK182ES for testing and they look great!

So, my parts were bad, as I suspected. It happens. I will drown my sorrows in a beverage of some sort.

Here's what a good 2SK182ES looks like:
Click to expand...

Micheal,

I would have PM'd you, but that's apparently disabled for your account?

Anyhow, I was stumbling around and opened an unlabeled door and landed on this thread. 😀

What I wanted to comment on is the curve traced results?
Not sure exactly, but IF you take the posted images rotate them 90 degrees (and for ease of comparison) mirror them, they look remarkably like almost all other "regular" solid state devices... of course I am presuming that the axes are not merely flipped on these curve tracers?
 
#145
No, the axes are correct. That's the magic of these devices. They are more like triodes, in that they have an unsaturated drain characteristic (sort of like having a much expanded ohmic region in the devices you're used to looking at)

I disabled PM. I prefer email mike (at) audiohobby.com. It's just easier for me to respond to questions and such in one place.

Thanks for popping in 🙂
 
Last edited:
#148
lets get down to business!

So since these devices seem very similar with tubes, at least their curves, what if we treat them like tubes in the old fashioned way? Lets say 300/V0,5A 700Ω loadline? Only negative about it is the input capacitance but this can be also solved by a good preamplifier. Am I missing something? Huh, I am missing the SITs as I already got the transformers and regulated power supply😡
 
Last edited:
#150
panos29 said:
So since these devices seem very similar with tubes, at least their curves, what if we treat them like tubes in the old fashioned way? Lets say 300/V0,5A 700Ω loadline? Only negative about it is the input capacitance but this can be also solve by a good preamplifier. Am I missing something? Huh, I am missing the SITs as I already got the transformers and power regulated supply😡
Click to expand...

No, you're not missing anything. For example, see Ironamp. As long as you stay within the power ratings and so forth, you can try lots of things with these.
 
#159
Thanks Michael! Watching the 182ES work with much interest. Enjoyed #4 a lot.

My long term building plan

JFet - Aleph J amp - done
VFet - CX-1 is next up, after I finish a DDDAC
SIT - with 182ES will follow

Still looking around for a 2a3 or 300b schematic that strikes my fancy.
 
Status
Not open for further replies.
Top Bottom