PLCs are a great option for controlling all kinds of things. I have worked on many of them. Output modules are about the only thing that ever goes wrong with them unless they get hit with a high surge like a nearby lightning strike.
Another option would be to use some of the newer little microprocessors. The Arduino and Picaxe are both pretty easy to program with the Picaxe using basic language and the Arduino using libraries of code. I prefer the Picaxe only because I learned to program it first and am more familiar with it. Either of them or some of the others can be connected to driver chips to control Fet's for power control.
The Basic Free Energy device thread has some code for a Picaxe I wrote to control a battery swapping control board. You can see how simple it is to program by looking at that code. See page 45 of that thread and look for post 1340.
For example to program for switching the part g you would write:
high 1
pause 10
high 2
low 1
pause 10
high 3
low 2
pause 10
and so on until you got to the end of how ever many connections you had. This would turn on a mosfet and then pause for 10 microseconds and then turn on the next mosfet and then turn off the previous one to give you a smooth transition with no drop outs and no arcing. You adjust the pause to get the frequency you want depending on the number of steps you have.
Carroll
Another option would be to use some of the newer little microprocessors. The Arduino and Picaxe are both pretty easy to program with the Picaxe using basic language and the Arduino using libraries of code. I prefer the Picaxe only because I learned to program it first and am more familiar with it. Either of them or some of the others can be connected to driver chips to control Fet's for power control.
The Basic Free Energy device thread has some code for a Picaxe I wrote to control a battery swapping control board. You can see how simple it is to program by looking at that code. See page 45 of that thread and look for post 1340.
For example to program for switching the part g you would write:
high 1
pause 10
high 2
low 1
pause 10
high 3
low 2
pause 10
and so on until you got to the end of how ever many connections you had. This would turn on a mosfet and then pause for 10 microseconds and then turn on the next mosfet and then turn off the previous one to give you a smooth transition with no drop outs and no arcing. You adjust the pause to get the frequency you want depending on the number of steps you have.
Carroll
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