APPLEVISION Monitor,, Simulators

From: Raymond Moyers <rmoyers_at_nop.org>
Date: Tue May 7 22:05:58 2002

On Tuesday 07 May 2002 19:54, you wrote:

> I don't use simulators as the major design tool because simulators have
> no connection to the real world

> Now, if I asked you do design something and you came back with just
> simulator results I'd tell you to go away and actually build the darn
> thing.

 I demoed oregano for a chum.
 A tube circut with values for about 30 mhz, Class C, PI output.
 almost identical to the output stage of my first kilowatt
 I built at age 14.

 "Could i build that and it would work?" he asked

 It was a difficult concept to explain that the working
 drawing and the correct values and conditions
 being simulated was rather short of the information
 needed to create it in real life.

 For this amp, where/how you place the parts is as
 important as what the parts are and their connectons.
 the cabinet work and how RF tight is your screening,
 nutralization feedback, im sure ive missed something.
 
 Virtual power supplies dont even sag like real ones do
 nor do they couple ripple exerted by the output load
 back to your rather annoyed small signal stuff.

 Its almost as empty as porn simulating sex,
 you can see what is happening and how
 its being done but unless its real you dont
 get the feel. heh

 That some things are missing from a "simulator"
 are not always bad.

 Xtrs totaly lacks the realism of the mainboard microphonics
 and the behavior of that expansion box cable when it got dirty
 and those floppies where every write was a time to pray.
 ive never seen a trs80 so stable. ;=)

 Raymond
Received on Tue May 07 2002 - 22:05:58 BST