In both cases you have diodes acting simultaneously in parallel to conduct current. How well they share the current is doubtful. I would prefer a single diode-bridge that can handle the full current.
The first is how you have to connect two bridge rectifiers in parallel, though you shouldn't do this of course as its not thermally stable.
Get larger diodes and use 4 of them.
Actually if you have to double up, the latter arrangement is better if you can thermally bond each parallel diode pair to better
share current - two diodes in one TO220 package are available for instance.
Get larger diodes and use 4 of them.
Actually if you have to double up, the latter arrangement is better if you can thermally bond each parallel diode pair to better
share current - two diodes in one TO220 package are available for instance.
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Roland, is there a special application you are thinking about, or a specific performance attribute that you want to improve on, or is this just a general query about some schematic you have seen and aren't really appreciating why it was designed that way, or ....?
> see about as many differences
For reference:
https://slylockfox.files.wordpress.com/2012/09/slylock-fox-2012jan15.gif
This comic runs every Sunday here. Yes, pretty dumb. But the "find the differences" can be a bit tough. As you see, as printed the fork is flipped, the chair lost a leg, etc. I just have this private fear that someday the printer will assemble the same image twice and I will be forever lost looking for differences. (Actually, with the image blown-up on clipboard there ARE differences beyond the promised six.)
For reference:
https://slylockfox.files.wordpress.com/2012/09/slylock-fox-2012jan15.gif
This comic runs every Sunday here. Yes, pretty dumb. But the "find the differences" can be a bit tough. As you see, as printed the fork is flipped, the chair lost a leg, etc. I just have this private fear that someday the printer will assemble the same image twice and I will be forever lost looking for differences. (Actually, with the image blown-up on clipboard there ARE differences beyond the promised six.)
Hmmm 🙂 I can't see six differences, five I think but I'm on a laptop and not sure on one of them. The shadow around the steaming chop.
See what you've done now 😀
See what you've done now 😀
For the fist drawing, I had a diy center tapped transformer which I used to build the F4.
This was what I could do with 2 bridge diodes to prevent stressing the rectifier from a grinding class A demand.
The second drawing was from F5 Turbo v2 PS.
I quickly realized it was indeed exactly the same connection before Mooly first replied.
Honestly, I did not intend to make it appear as spot the difference🙂