I need a help on this attached circuit diagram, which I’m planning to make it as a hobby Magnetic pulser circuit. In this I have a doubt on Pchannel mosfet IRFD9024. How it is connected to the comparator LM311? which lead is the Drain, source and gate for this IRFD 9024. I tried referring to the data sheet but I couldn’t make it. If you can help me that would be much helpful.
Logically/by reasoning a bit: the gate is controlled by the comparator, the drain is the output pin, and the source is where power comes into the PMOS from the supply.
did you really take a 5Megabytes photo of low quality from a PC monitor?
Why no link to the source, why no PNG screenshot or upload (a part of) the document?
Then we could at least read what´s written on the schematic.
to me it it seems that there is an additional letter before the "IRFD"...
did you really take a 5Megabytes photo of low quality from a PC monitor?
Why no link to the source, why no PNG screenshot or upload (a part of) the document?
Then we could at least read what´s written on the schematic.
to me it it seems that there is an additional letter before the "IRFD"...
For safety, solder a whole bunch, say 5, 10A10 diodes across your high voltage storage caps - thus if the SCR goes short the pulse will still be unipolar and you won't blow the caps up - also always choose an SCR with 8.33/10mS Ipk rating about twice your expected peak current, also do not exceed the di/dt rating of the SCR ( read data-sheet carefully ),
We have a similar (power) ckt at work that makes 2.5kA for magnetising hard ferrites, from 400V, 4000uF - with carefully controlled coil structures.
You may find the MCR25 at 300A rated pk is a little small for this work, we have a 6kA rated SCR ( hockey puck style )
--- Updated ---
Also in the ckt shown the PNP will likely be on all the time ....
For safety, solder a whole bunch, say 5, 10A10 diodes across your high voltage storage caps - thus if the SCR goes short the pulse will still be unipolar and you won't blow the caps up - also always choose an SCR with 8.33/10mS Ipk rating about twice your expected peak current, also do not exceed the di/dt rating of the SCR ( read data-sheet carefully ),
We have a similar (power) ckt at work that makes 2.5kA for magnetising hard ferrites, from 400V, 4000uF - with carefully controlled coil structures.
You may find the MCR25 at 300A rated pk is a little small for this work, we have a 6kA rated SCR ( hockey puck style )
--- Updated ---
Also in the ckt shown the PNP will likely be on all the time ....