Small Lab Supply based on DP30V5A
by JoeyC, published
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I wanted to build a small bench/lab supply for my electronics work and decided to try using the DP30V5A adjustable supply controller from Banggood.com:
This a great little unit and it costs less than $32. It does need an external power source, but I had an old 24V 5A supply handy.
You will also need:
40mmx10mm 24V fan (The fan voltage depends on your input supply voltage)
Sermos/Anderson power pole connector for input power.
Banana jacks for output connection.
7 #2x3/8" screws
Some wire, etc..
.3mm 2 extra shells
Assemble the case
Use thick CA glue to assemble the parts of the case.
Glue the front panel to the base first, then the top.
I found that I had to sand the bottom of the front panel a bit to get it to sit flush at the top.
Getting a smooth finish
I decided to try for a very smooth finish on the case so I used Bondo auto body putty to fill in the gaps between the "noodles". (This works for PLA, but not with ABS.)
I did this two times and wet sanded after each applictaion had dried. First with 240 grit then 400 grit.
It worked better than I had hoped, after spray painting it looked great!
I used Krylon 2X spay paint.
I wired up the parts first and then installed them into the case.
First install the banana jacks.
Then install the power switch.
Then run the wires to the DP30V5A thru the opening and connect them. After that insert the unit into the front panel.
I mounted the fan to the back with 4-40 nuts and bolts.
I added a fuse block help on with a 6-32 bolt and nut. If you want to do that you will need to drill a hole for it.
The next thing was to mount the Sermos/Anderson power pole connector for the input power. It is hels in place by a #2x3/8" screw and some thick CA.
The final step is to use 6 #2x3/8 screws to hold the back panel on.
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Small Lab Supply based on DP30V5A by JoeyC is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
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