Tweakers' Asylum: Re: IEEE paper of interest on thermal coupling in ICs by john curl

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Re: IEEE paper of interest on thermal coupling in ICs

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curl

In Reply to: Re: IEEE paper of interest on thermal coupling in ICs posted by Elso Kwak on April 21, 2001 at 04:22:33:

I hooked up a JC-2 line stage yesterday and tested it. The JC-2 module is over 25 years old, but it measures OK. I get about .005% harmonic distortion at 3V out, mostly 3'rd harmonic.Since, it is running at 40 ma, it is running class A. It does have a lot of offset voltage. The interesting thing is your opinion that it can be easily replaced by an augmented IC. Well, folks! It's time to retire! ;-).
For the record, the AD744 IC is a good chip. I use it as my oscillator chip in my Sound Technology distortion analyser. It is essentially a de-compensated AD-711 with a current of 3.5 ma, instead of only 2.5 ma for the 711. It was designed by Scott Wurcer, who also designed the AD797. It is the AD797 that is the true contender in the line amp design contest, in my opinion. There are several preamps use that chip (properly) that really give me a run for the money. I'll stick to discrete design, based on the ancient JC-2 modules, but with today's improvements.

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Topic - IEEE paper of interest on thermal coupling in ICs - wildmonkeysects 21:20:43 04/18/01 ( 17)

Re: IEEE paper of interest on thermal coupling in ICs - Elso Kwak 16:02:59 04/20/01 ( 3)
- Re: IEEE paper of interest on thermal coupling in ICs - john curl 19:43:16 04/20/01 ( 2)
  - Re: IEEE paper of interest on thermal coupling in ICs - Elso Kwak 04:22:33 04/21/01 ( 1)
    - Re: IEEE paper of interest on thermal coupling in ICs - john curl 04/21/01 12:08:30 04/21/01 ( 0)
Re: IEEE paper of interest on thermal coupling in ICs - adnut 03:48:02 04/20/01 ( 0)
Re: IEEE paper of interest on thermal coupling in ICs - john curl 01:58:58 04/20/01 ( 0)
Re: IEEE paper of interest on thermal coupling in ICs - Pete Fleming 23:00:32 04/19/01 ( 0)
Re: IEEE paper of interest on thermal coupling in ICs - Steve Eddy 17:57:56 04/19/01 ( 9)
- Zen and the art of wishful thinking - Daniel Espley 04:51:21 04/21/01 ( 1)
  - Re: Zen and the art of wishful thinking - Steve Eddy 18:06:32 04/21/01 ( 0)
- And your point is...? [nt] - wildmonkeysects 19:00:07 04/19/01 ( 6)
  - It's apparently flying some distance over your head. *shrug* nt - Steve Eddy 19:48:16 04/19/01 ( 5)
    - Duuuude, go easy on the caffiene...this is tweakers corner, not tweekers alley - wildmonkeysects 16:27:36 04/20/01 ( 4)
      - Re: Duuuude, go easy on the caffiene...this is tweakers corner, not tweekers alley - Steve Eddy 22:13:07 04/20/01 ( 3)
        
        COOL IT! - The Moderation Group 11:32:11 04/21/01 ( 0)
        
        Re: Duuuude, go easy on the caffiene...this is tweakers corner, not tweekers alley - john curl 03:33:08 04/21/01 ( 1)
        
        Re: Duuuude, go easy on the caffiene...this is tweakers corner, not tweekers alley - john curl 03:40:27 04/21/01 ( 0)