Well.. I fried a B100, Possibly blew the fuse on a rack. No modules were sticking in the brand new board, I was working on the com link here.
Funny thing about them old boards, if it is not between 5.0 and 5.1 volts they never will talk.
The pattern tufting machines I built for Queen Carpet used a parallel DMA kinda of board, Opto22-Pamux, those are much better at rapid changes. I have one pc board left with a isa bus, I had it on a robotic creeler in 1989.. I bought these serial boards off ebay about ten years ago, I had envisioned a robotic casting system where I could sit in the house and just take a wheelbarrow and bring up the casted parts to ebay. Well, when a gearbox got busted cause I pushed a limit over ride in a moment of confusion? It was several thousand dollars I did not have in pocket to replace. The remote camera never worked correctly. I went from one to another. The last one, a gadspot lays here on the bench taunting me. I had it working with the surveillance system for a week.. quit again. It loses it's static set ip address and you have to go hunt it. Battery? or however it keeps it in memory. It is dynamic ip when you push the reset and you "find" it.. other than that? it took some excellent green glow pictures where you could not see what was going on. THE newest $25 chinese BNC connected cameras are much better. I ran conduits in the ground, never had help here to pull the cable.
You might remember the "hot Liquid metal" water-pistol topic where people said I was insane? Thrud was around then.
Surface finish on this contraption can "suck" for a while, as long as it burns bolts out as I ask.
The antique 300 amp westinghouse welder had inline resistors and a HUGE rheostat for fine current adjustment. I moved the two base resistors over into this can, the rheostat will probably give me more than enough power. THE big can-capacitor is off a oxygen generator supply, the breaker-switches are from the westinghouse welder, how they switched in the resistors. Transformer is from a hobart battery charger, modified, I did one of these with a loop of welding cable as a secondary for a spot welder.. I may move that over to this one and just leave that circuit open.
The 120 volt superior synch stepper, once you push the go button and latch Mcr, it runs down till it breaks hi voltage relay circuit, if it breaks low voltage circuit it runs back up. It bounces up and down charging circuit, deadband pot adjusts that, the other pot in the voltage divider circuit just tunes it in. I plan on putting test points out where I can adjust it too thou.
The lil block where the zener feeds is actually two modules, a idc5 opto22, and a oac5 module. THE bus circuit feeds into the high voltage side and triggers the ttl side, the input will power the input on the ac module.. a way of keep a bit of simplicity in the circuitry.. all on a 4 position pbr4 opto22 backplane board.
It seems to work while wired on the table. I had on saftey glasses while working since lately I have been known to make mistakes.
Excuse me, I farted.
I just got a offer of $500 for this rig. He wants it as a chrome plating supply? Never thought about it.
Two wires change and it becomes a 12 volt dc, swap two, 24, swap two 48.
That'd let me buy them Toshiba FET's to play with.
Edit: October 21st, 2009.. this build has ended here.. I will complete it as a dc supply for a buddy, the goof ball in Atlanta has not called me back. He can make a living derusting and powdercoating with it.
Last edited by Dawai; 10-21-2009 at 09:43 AM.
Excuse me, I farted.