Quote:
Originally Posted by DancesWithWords
None of the zipfile seemed to work for me. Tried them on two computers.
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Worked fine here.
Downloaded zip file, extracted to a folder and opened them with eagle PCB...no problems.
Patent office...yeah right patent on a 555cct...I laff
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I'll be revisiting these ccts soon. I'm plating with a stepper focuser controller and when done I'll update these probably with over current feed back control...hopefully.
But the principle of using a "high side switch" for dew heaters...is absolutely important. Circuit still going strong since built. I had to replace one potentiometer as I banged it against a wall and damaged it....my fault.