DrkAngel
1 GW
MeanWell Mods
MeanWell Mods - S-150-5
MeanWell Mods - S-150-12
MeanWell Mods - S-150-24
MeanWell Mods - S-150-48
MeanWell Mods - S-240-48
MeanWell Mods - S-350-48
See- ES Wiki MeanWell Mods for more
View attachment 2
Specs:
Mean Well S-240-48
240w max continuous output
48V - adjustable from 41V - 56V
5A max continuous output@48V -
48V x 5A = 240W
Thermal regulated fan
Factory Specs
Rated at 5A, but will surge-sustain much higher, burning components
Solution:
Restrict the amp output -
The "R33" resister is the key to regulating amperage.
Just getting started.
Format is greatly different from the S-150 and S-350's.
Current is adjustable through the R33 resistor! ... ?
The R33 resistor is hidden under a transistor and its heatsink.
Worse!
R33 appears to be 1 watt ~10 ohms.
Which means a typical pot (1/4w) will be insufficient for testing.
Will have to "trim" by buying and adding 1w resistors in parallel.
10 ohm + 100 ohm should produce about 9 ohm, at least it should give a baseline for various trimming.
Unless ...
R33 serves a differing function on this model?
I have a 2w 200ohm resister to run an initial test with (10 to 9.5ohm) ... should show some minor variance, or at least cause no damage.
Update: Just found and ordered up a "470 Ohm 1W 5% Rotary Potentiometer".
Should provide a full range of amperages.
ES Wiki page under development - MeanWell S-240-48
MeanWell Mods
S-150-5
S-150-12
S-150-24
S-150-48
S-240-48
S-350-48
MeanWell Mods - S-150-5
MeanWell Mods - S-150-12
MeanWell Mods - S-150-24
MeanWell Mods - S-150-48
MeanWell Mods - S-240-48
MeanWell Mods - S-350-48
See- ES Wiki MeanWell Mods for more
View attachment 2
Specs:
Mean Well S-240-48
240w max continuous output
48V - adjustable from 41V - 56V
5A max continuous output@48V -
48V x 5A = 240W
Thermal regulated fan
Factory Specs
Rated at 5A, but will surge-sustain much higher, burning components
Solution:
Restrict the amp output -
The "R33" resister is the key to regulating amperage.
Just getting started.
Format is greatly different from the S-150 and S-350's.
Current is adjustable through the R33 resistor! ... ?
The R33 resistor is hidden under a transistor and its heatsink.
Worse!
R33 appears to be 1 watt ~10 ohms.
Which means a typical pot (1/4w) will be insufficient for testing.
Will have to "trim" by buying and adding 1w resistors in parallel.
10 ohm + 100 ohm should produce about 9 ohm, at least it should give a baseline for various trimming.
Unless ...
R33 serves a differing function on this model?
I have a 2w 200ohm resister to run an initial test with (10 to 9.5ohm) ... should show some minor variance, or at least cause no damage.
Update: Just found and ordered up a "470 Ohm 1W 5% Rotary Potentiometer".
Should provide a full range of amperages.
ES Wiki page under development - MeanWell S-240-48
MeanWell Mods
S-150-5
S-150-12
S-150-24
S-150-48
S-240-48
S-350-48