Electronics > Projects, Designs, and Technical Stuff
Home Brew Analog Computer System
GK:
WOW! I am blown away by all of the discussion this project presentation is generating! :P ::)
Here is the final schematic for the horizontal deflection coil driver (utilizing the high inductance, previously vertical, coils of the deflection yoke).
chickenHeadKnob:
--- Quote from: GK on April 25, 2013, 08:45:34 am ---WOW! I am blown away by all of the discussion this project presentation is generating! :P ::)
--- End quote ---
careful what you wish for dude. I have been watching your progress and sort of biting my tongue. A slightly evil urge has come over me.
You see decades ago I became fascinated with the Fermi-Pasta-Ulam problem, which is a seminal problem in nonlinear dynamics from the 50's. It was an early digital simulation done by the Los Almos peeps at a time when people were still playing with analog computers and hybrids. The surprising thing about the FPU problem is that it was a demonstration of a system which had chaotic modes when it was expected to time evolve ergodicly with equi-distribution of energy. I have always wondered how you could do this simulation with strictly analog computation and have the results graphically displayed in real-time. Now I don't have the chops to make an analog FPU problem simulator so I want you to make it happen for me.
I mean you have all this equipment and ability but nothing interesting to calculate. >:D
GK:
So how many individual integrators will that problem require then? ;D I'm assembling into this computer project 30. I still have a ship load of hardware assembly to complete before I can run anything serious. I currently have this machine ~90% designed and ~5% built. The former has been taking nearly all of my free time over the past several months, but should make way for the latter (construction) in another month or two in a major way. Once this thing is built I'll have all the time in the world to study problems to run. However my mathematical background is rather weak, and I require more than just a little revision. That is going to be as much if not more of an endeavor as was designing and building the computer to begin with. I'm currently tracking down and filling a bookshelf with classic analog computing texts (a dozen so far). My current bedtime reading is Albert S. Jackson's Analog Computation.
GK:
....... and here is the revised/final schematic for the vertical deflection driver amplifier. At ~50kHz it has 10 times the small signal bandwidth of the horizontal deflection driver amplifier.
baljemmett:
--- Quote from: GK on April 25, 2013, 08:45:34 am ---WOW! I am blown away by all of the discussion this project presentation is generating! :P ::)
--- End quote ---
I think you need to chuck in an Arduino, a blinky LED and some obvious design errors if you want real discussion ;)
But seriously, I'm enjoying reading about your progress - analogue computing (hell, analogue anything) is not something I know a busting lot about, so I'm keeping my head down and my ignorance hidden, but I'm fascinated nevertheless.
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