ok, so I am trying to select some capacitors for a welder i am building,
I found a stockpile of 64000μF caps for $3 each, however they do not have too many markings on them besdes that, other than to say they are 20V and SURGE 25VDC. I was thinking of using two banks of these, for a two step discharge, however, I do not know if they are capable of handleing the current discharge. they are a scew terminal can, i'll get a pic to post when i get home from work.
Is there a way i can safely test if one of them would handle being shorted?
the other question is about SCR/thyristors/relays.
I'm plannign on using one of these three as a switch to allow current to flow to the discharge electrodes. I have it set up so that the time the switch is open can be varied, however i do not know enough about the SCR/Thyristor to tell if it has a response time quick enough. the Relays probably would, though i dont know if i could find one to handle the current load. (at least 2kA)
I've read several posts, and articles on the SCR/Thyristor, but can't seem to find the answers I am looking for (probably just didnt recognize them)
An help and advice (on these or the project as a whole) would be greatly appreciated.
Thanks in advance
Mike
I found a stockpile of 64000μF caps for $3 each, however they do not have too many markings on them besdes that, other than to say they are 20V and SURGE 25VDC. I was thinking of using two banks of these, for a two step discharge, however, I do not know if they are capable of handleing the current discharge. they are a scew terminal can, i'll get a pic to post when i get home from work.
Is there a way i can safely test if one of them would handle being shorted?
the other question is about SCR/thyristors/relays.
I'm plannign on using one of these three as a switch to allow current to flow to the discharge electrodes. I have it set up so that the time the switch is open can be varied, however i do not know enough about the SCR/Thyristor to tell if it has a response time quick enough. the Relays probably would, though i dont know if i could find one to handle the current load. (at least 2kA)
I've read several posts, and articles on the SCR/Thyristor, but can't seem to find the answers I am looking for (probably just didnt recognize them)
An help and advice (on these or the project as a whole) would be greatly appreciated.
Thanks in advance
Mike