I am currently working on putting together a design draft for an MV inverse-parallel thyristor controller assembly.
The assembly itself would be running at 7920Vac nominal, 50Hz 90A.
The thyristors we will be using are 'hockey puck' style, single side cooled on a suitable aluminium heatsink.
Our...
It is. I probably should have taken that out for the purposes of taking a screenshot.
I ran the simulation on Multisim just to see if any errors popped up, and it requires a ground point for that.
No errors popped up though, so I was a little more confused after that.
I have checked the diodes they put into the veroboard. Everything seems fine there.
The capacitor in use is a 400Vdc electrolytic, so not concerned about voltage there.
The resistor in use is a 3W resistor with a max working voltage of 500V, so not a concern there either.
The 110Vdc relay...
My companys test department needs a DC power supply to give 110Vdc to power a DC relay for testing purposes, and they don't want to buy a purpose built one.
Up until now our test department has been chaining a couple of 30V dual output DC power supplies in series to get the voltage needed but...
400A is likely the absolute maximum rating for the FDS. Using a smaller fuse could be a simple way of derating the FDS dependant on load size.
But yes, as dpc says, ensure the fuse that has been fitted has been suitably selected.
Thanks everyone for the replies, much appreciated.
I kinda suspected that the forward voltage drop difference would have been the issue here.
I thought perhaps that if they were close enough then they would share but unequally, but it seems not to be the case here.
The thyristors did actually...
Good afternoon all,
I have a problem which has really melted my brain this afternoon and I am hoping someone can offer some insight.
My company had recently designed and built a three phase thyristor bridge rectifier for our customer.
One of our customers requests was that each thyristor had...
