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Old 8th February 2013, 05:41 AM   #81
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Did I hear Boston? I'm in Boston too! Let's have a get together the next time Mike is in town.
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Old 8th February 2013, 10:55 AM   #82
flg is offline flg  United States
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Bipolar product I've worked with in the past was thought to be accelerated by 17X operating at 170C.
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Old 8th February 2013, 10:58 AM   #83
flg is offline flg  United States
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Well, I live in Southern RI and work about in the middle of RI. Boston's probably an hour from here I suppose.
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Old 8th February 2013, 11:10 AM   #84
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by Semisouthfan View Post
..... I'll have to look into whether any of those are still around...


feel free to send few dozens to Pa , for proper evaluation and mist production;

I'll bug him to forward few to me , for usual disposal procedure

then we'll talk further , about melting my Ferrari in small siccies

(disclaimer - my Ferrari is Matchbox , 312 model - probably one of greatest , old almost as moi )

and yes - I'm dreaming all the time about wasting several watts in input LTP or whatever stage ; LU1014 or SJEP550 are just .......... exactly spear above regarding current needs , looking at ohmic region
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Old 8th February 2013, 01:44 PM   #85
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Default Connect Dr. Mazzola with his face [picture]

At LinkedIn, and the Staff of the Electrical and Computer Engineering at MSU.

Last edited by Antoinel; 8th February 2013 at 01:53 PM.
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Old 8th February 2013, 02:41 PM   #86
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At LinkedIn, and the Staff of the Electrical and Computer Engineering at MSU.
And there is a wealth of interesting info at MSU on/by Dr. Jeffery B. Casady and Dr. Mazzola.
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Old 8th February 2013, 03:23 PM   #87
kevinh is offline kevinh  United States
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Well if one could help folks here understand how to make a solid state device dance like a triode that would be a very good thing.

Part of the game here is avoiding higher order harmonic distortion and see in mostly 2nd and 3rd harmonic, looking forward to more info from the OP.

Thanks for the OP.
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Old 8th February 2013, 03:48 PM   #88
flg is offline flg  United States
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Another wonderful characteristic of tubes is the clipping behavour. Turning a sine wave into a square wave, as in clipping, produces massive amounts of odd order distortion. A tube circuit generally has a very rounded, smoother looking peak when driven to clipping. This translates into a much less anoying sound and less distortion. Almost a slight amount of peak limiting rather than clipping.
I understand SITs also have this soft clipping behavour?
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Old 8th February 2013, 05:50 PM   #89
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Quote:
Originally Posted by kevinh View Post
Well if one could help folks here understand how to make a solid state device dance like a triode that would be a very good thing.

Part of the game here is avoiding higher order harmonic distortion and see in mostly 2nd and 3rd harmonic, looking forward to more info from the OP.

Thanks for the OP.
Quote:
Originally Posted by flg View Post
Another wonderful characteristic of tubes is the clipping behavour. Turning a sine wave into a square wave, as in clipping, produces massive amounts of odd order distortion. A tube circuit generally has a very rounded, smoother looking peak when driven to clipping. This translates into a much less anoying sound and less distortion. Almost a slight amount of peak limiting rather than clipping.
I understand SITs also have this soft clipping behavour?
It's all in the available shapes of the output curves (Id vs. Vds). More in the next article (at least my beginner's stab in the dark on the question).
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Old 8th February 2013, 05:55 PM   #90
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I think this is starting to get REAL interesting.
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