Previously, I have documented a wide variety of mods for the
MeanWell S-150-24.
Spotted a cheap Volt amp meter that inspired me to one further mod.
<$5 100V 10A dual color meter
MW 15-29V 0-10A PS-Charger
I lucked into a supply of Genuine MeanWell S-150-24's with the switch and shroud that made this build extra nice.
Using my documentation on values for different mods ...
Originally Posted by DrkAngel
Wider Amp adjustment:
Disconnect, or remove R33 & R38.
Replace with adjustable" pot"
Working with 12.6V LiPo pack through inverter
Amps ...... Ohms
1A ... from ... 70 ohms
2A ... from ... 175 ohms
3A ... from ... 287 ohms
4A ... from ... 392 ohms
5A ... from ... 500 ohms
6A ... from ... 610 ohms
7A ... from ... 715 ohms
8A ... from ... 855 ohms
9A ... from ... 920 ohms
10A .. from .. 1050 ohms = 1.05 k
11A .. from .. 1140 ohms
12A .. from .. 1293 ohms
13A .. from .. 1357 ohms
14A .. from .. ? ohms
15A .. from .. ? ohms
16A .. from .. ? ohms
17A .. from .. ? ohms
18A .. from .. ? ohms
19A .. from .. ? ohms
20A .. from .. ? ohms
etc.
I disabled R33 and R38 and ran wires to a 1K large turn pot.
This gave me an amp adjustment from .17A to 10A.
Surprisingly, the amp graduations are fairly equidistant!
I wanted a minimum 15V capability and could have used a 2K pot to acquire the capability, but I preferred more precision.
So, instead of removing the SVR1 pot I cut the "sweep" leg and ran wires to the leg and to the circuit, then added the 1K large turn pot in series.
The result?
19-29V adjustment from the top mounted pot, with the optional adjustment of the on board pot shifting the top mounted pot to as low as 14.5-19.3V.
I wanted 15V capability for a full 10A @ 15V.
Since I intend this as a fairly universal power supply, I used a Deans T-Plug for mounting various output connections.