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Originally Posted by n_maher  I believe that I mentioned this way back when I gave you my build notes but have you ruled out a Vout trimpot simliar to the STEPS design?
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Yeah, I wasn't wild about it then, and I'm not wild about it now.
I think it's because it goes against my concept of a precision DC power supply. Making it adjustable will make the feedback loop larger, and it implies that the output won't be exactly as-designed, within component tolerances. I guess I could talk myself into a very small trim pot that adds to one of the two fixed Rs for compensating for those component tolerances, but then you risk drift. Ech...
My opinion on this isn't set in stone...this's just what I think right now.
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| I found that the spacing of the mounting points was a bit too close for the typical fuses. |
I'll look at it.
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| It might be easier to just use an off-board fuse if you have the same version pcb that I had. I know tangent was going to address it in future versions. |
The ones that went out recently were v1.0. Maybe you could crack the case on yours to see if it was, perhaps, 0.5 or even 0.4?
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Originally Posted by Mazuki Can you space out the I/Os so that solderless terminal blocks can be installed?
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Already on the Wishlist, definitely to be done in the next version.
While on the topic, here's the current Wishlist:
- Move secondary-side parts farther away from primary, 8mm minimum distance
- Make it possible to parallel transformer outputs. (Not helpful with 15 or 25 VA, but will let you use 5-10 VA transformers, when lower supply voltages are allowed.)
- Move C8 out from between output pads, to allow use of terminal block
- Add extra GND pad(s)
- Add silkscreen labels to board to make use of unencapsulated toroids easier
- Bigger X and Y cap positions than STEPS
- Add holes for heat sink mounting screws
- Double-check fuse clip distance
Any type in particular you want to use? I had in mind Molex KK's.
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Originally Posted by JamesL I wonder if the 'improved' version suggests changes to the board layout, or the schematics.
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Anything concrete?
For one of the sinks it's pretty easy, for the other you can only get a fastener on one side but that's still better than nothing. And if you have any questions just ask, I may or may not remember the answer but I can always just look at the board that I still have.
