Electronics > Beginners

DIY power supply

<< < (12/31) > >>

Pirateguy:
i want to build my own for now, and either improve it over time or replace it with a commercial unit
if/when my projects and needs get more sophisticated. though i have a bunch of things still higher up on my wishlist.
including a DSO (currently have only a 1st gen dso nano) and moving to another house.

as for the ATX case, my intention was to put it back in the original case and build all the externals into the side.
all that will change in the end is there will be fewer wires, some room made by removing bulky connectors and soldering
wires to the board, and the back side of all the binding posts and display etc.
which, on that side should not effect airflow too much.

if i add another heat sink though that will change i think.
so right now i think maybe going with the HP one for the variable might be better.
though i don't have a case for it that can fit the additional stuff.

so for now i think i will build the ATX with the fixed outputs and a temperature display.
ill use the polyswitches for protection, and add LEDs on each output to let me know if i popped one.

and i will set aside the HP one for the variable unit, and treat that as a separate project.
prolly end up going for suggestion 1) with an option to upgrade to suggestion 2) later.

so for the ATX fixed output unit, for the load resistor on the 5v, could i use one of the ones from this thing?:


MarkF:
Try it first without a load resistor. Some supplies don't need it. Depends on when it was made.

coldfiremc:
Sorry but I can't resist

MarkF:
Fantastic  :-DD
But the sword is jealous

MarkF:

--- Quote from: Old Printer on August 15, 2018, 02:41:24 am ---
--- Quote from: MarkF on August 15, 2018, 01:18:40 am ---I do like these little HP Supplies.  Not a lot of power but without a fan, they are quiet and don't take up much space.
   HP 6216A Power Supply

--- End quote ---

Ditto on the little HP's. The 6216A is good for about a half amp at 24 volts. Has both voltage and current modes, each having coarse and fine adjustments. Very well documented which is easily available online. Operation, service & schematics. With a little patience they can be had in nice shape for $50 shipped on ebay. I bought three last winter like that for my bench in a spare bedroom. Quiet and compact, built like a tank and easy to repair.

--- End quote ---

Great minds think alike Old Printer.
I also bought three of the HP-6216A power supplies for my bench in a spare bedroom. In addition, I bought a HP-6217A which is 50V@200mA.
I also built a +/-15V@1A using the PCB I posted above for an analog project needing clean power rails.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod