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
MeanWell S-150-5
Specs:
*Mean Well S-150-5
*150w max continuous output
*5V - adjustable from 4.5V - 5.5V
*30A max continuous output@5V -
*5V x 30A = 150W
*No fan - Open grid shell - convection cooling
Factory Specs
Problem:
*Rated at 30A, but will surge-sustain much higher, burning components
Solution:
*Restrict the amp output -
*The "R33" resister is the key to regulating amperage.
S-150-xx component locations
*For testing purposes, I soldered 2 wires of a 2s balance plug to the ends of the R33 resister.
*Then plugged a multi-turn 2K Pot (potentiometer) into the balance connector.
*Then I lowered the voltage to minimum and applied "load".
*Removing and measuring the pot's ohms.
*(Pot must be removed to measure! "In circuit" it is laid parallel with 2 other resisters.)
Restricting Current (Amps) - R33 Mod:
(Reasonable sampling of actual measures - remainder estimated)
*~40A = OEM 512 ohm
*35A = 3.0K
*32.6A = 2.2K
*32A = 2.0K
*30.5A = 1.6K
*29.6A = 1.4K
*28.4A = 1.2K
*26.8A = 1.0K
*25.37A = .850K = 850ohm
*23.6A = .750K
*22.5A = .600K
*22A = .570k
*21A = .510k
*20A = .476k
*19A = .428k
*18A = .387k
*17A = .340k
*16.8A = .333k
*16A = .302k
*15A = .271k
*14A = .241k
*13A = .211k
*12A = .187k
*10A = .140k
*9A = .120k
*8A = .099k
*7A = .081k
Wider Amp adjustment:
*Disconnect, or remove R33 & R38.
*Replace with adjustable "pot"
*Reasonable sampling of actual measures - remainder estimated)
*Amps ........ Ohms
*7A ... from ... 70 ohms
*8A ... from ... 83 ohms
*9A ... from ... 97 ohms
*10A ... from ... 110 ohms
*11A ... from ... 124 ohms
*12A ... from ... 138 ohms
*13A ... from ... 149 ohms
*14A ... from ... 164 ohms
*15A ... from ... 177 ohms
*16A ... from ... 191 ohms
*16.8A ... from ... 200 ohms
*17A ... from ... 205 ohms
*18A ... from ... 220 ohms
*19A ... from ... 230 ohms
*20A ... from ... 240 ohms
*21A ... from ... 255 ohms
*22A ... from ... 270 ohms
*22.25A ... from ... 275 ohms
*23A ... from ... 285 ohms
*23.6A ... from ... 296 ohms
*24A ... from ... 302 ohms
*25A ... from ... 317ohms
*25.37A ... from ... 320 ohms
*26A ... from ... 329 ohms
*27A ... from ... 342 ohms
*28A ... from ... 356 ohms
*28.37A ... from ... 360 ohms
*29A ... from ... 368 ohms
*29.59A ... from ... 375 ohms
*30A ... from ... 380 ohms
*30.54A ... from ... 387 ohms
*31A ... from ... 393 ohms
*32.A ... from ... 407 ohms
*32.5A ... from ... 415 ohms
*33A ... from ... ohms
*34A ... from ... ohms
*35A ... from ... 436 ohms
*36A ... from ... ohms
*37A ... from ... ohms
*38A ... from ... ohms
*39A ... from ... ohms
*40A ... from ... 512 ohms - oem
*41A ... from ... ohms
*42A ... from ... ohms
*43A ... from ... ohms
*44A ... from ... ohms
*45A ... from ... ohms
*46A ... from ... ohms
*47A ... from ... ohms
*48A ... from ... ohms
*49A ... from ... ohms
*50A ... from ... ohms
*etc.
Widening the voltage range - SVR1 Mod:
*By changing the value of the Voltage pot, I was able to lower the output range substantially.
*1K = 4.5 - 5.4V (oem)
*2K = 3.74 - 5.4V
*5K = 3.12 - 5.4V (not recommended)
*10K = 2.84 - 5.4V (not recommended)
*
*Running a 1k resister in series with the oem 1k pot should give me a 3.74V - 4.5V range as a dedicated 1s Li-ion charger.
*As I will demonstrate later, there can be great advantages to lower voltages.
Note! The higher value pots (10K etc) only allow a very "coarse" adjustment at the high voltage end. Harder to fine adjust.
Lowering Voltage
*Lowering voltage could take advantage of higher amperage.
*Without removing components, amperage is regulated below ~?Amps.
*R33, combined with it's neighbor R38, have a measured resistance of 614 ohms.
*Removing both and replacing with a 2K pot allowed me to produce a ?A supply.
*(?K setting. Will compile a chart for higher amperages - requires a higher capacity = less accurate amp meter.)
Component View
2004 - 08 - 27
R25 Mods - Lower Voltages
*R25 Mod
*The voltage adjustment pot (SVR1)limits voltage adjustment between 4.5V - 5.4V. It is possible to adjust voltage lower, but not higher, using a "larger" than 1K pot.
*However, the SVR1 pot is "in series" with the R25 resister.
*Altering the value of the R25 will shift the entire voltage range higher or lower
*oem value of R25 is 887 ohm.
Providing an 887 - 1887 ohm adjustment = 4.5V - 5.5V
*Adding a 1k resistor in series as 1877 ohm.
Providing an 1887 - 2887 ohm adjustment = 3.74V - 4.5V
Replacing R25 with a 2k resistor should provide ~3.5V - ~4.3V (great for Lithium Cobalt ... and might look prettier?)
Raising Voltage?
*Not tested ... or recommended!
*This model has 25V caps!
150 Watt!
*To be safe and effective, amperage should be adjusted as voltage is altered.
*Volts x Amps = Watts
*Watts should equal, or be slightly below, 150 watts.
*5V x 30A = 150W
*4.5V x 33.3A = 150W
*4.2V x 35.7A = 150W
*4.15V x 36.1A = 150W
*4.1V x 36.5A = 150W
*4V x 37.5A = 150W
*3.65V x 41A = 150W
*3.5V x 42.8A = 150W
*3.2V x 46.8A = 150w
*3V x 50A = 150W
*2.5V x 60A = 150W
*2V x 75A = 150W
*1.5V x 100A = 150W
*1.4 x 107A = 150W
*Yeah ... I'm gonna try pushing everything to the limits ... and then a little further!
(Will test to confirm)
Component Locations
In Series
----
*"In series" is when the DC negative of one power supply is run through the DC positive of another - combining their voltages.
Important!
*When run in "series" the DC "negative" must be isolated from the 110AC negative ... on all but the primary unit!. Otherwise, the DC positive from the primary unit will "short" through the AC negative on the secondary unit.
'''The negatives are usually connected through the "ground".'''
*3 points of "ground" to remove.
*The external ground - terminal 3.
*The green wire, at F1 near terminal 3.
*The bottom of the circuit board, under screw hole next to fuse. (Cut circuit traces, or insulate with ... fiber, or nylon, washer and screw?)
* The case can be "properly" grounded by connecting the AC ground wire to the removed green wire directly.
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
MeanWell S-150-5
Specs:
*Mean Well S-150-5
*150w max continuous output
*5V - adjustable from 4.5V - 5.5V
*30A max continuous output@5V -
*5V x 30A = 150W
*No fan - Open grid shell - convection cooling
Factory Specs
Problem:
*Rated at 30A, but will surge-sustain much higher, burning components
Solution:
*Restrict the amp output -
*The "R33" resister is the key to regulating amperage.
S-150-xx component locations
*For testing purposes, I soldered 2 wires of a 2s balance plug to the ends of the R33 resister.
*Then plugged a multi-turn 2K Pot (potentiometer) into the balance connector.
*Then I lowered the voltage to minimum and applied "load".
*Removing and measuring the pot's ohms.
*(Pot must be removed to measure! "In circuit" it is laid parallel with 2 other resisters.)
Restricting Current (Amps) - R33 Mod:
(Reasonable sampling of actual measures - remainder estimated)
*~40A = OEM 512 ohm
*35A = 3.0K
*32.6A = 2.2K
*32A = 2.0K
*30.5A = 1.6K
*29.6A = 1.4K
*28.4A = 1.2K
*26.8A = 1.0K
*25.37A = .850K = 850ohm
*23.6A = .750K
*22.5A = .600K
*22A = .570k
*21A = .510k
*20A = .476k
*19A = .428k
*18A = .387k
*17A = .340k
*16.8A = .333k
*16A = .302k
*15A = .271k
*14A = .241k
*13A = .211k
*12A = .187k
*10A = .140k
*9A = .120k
*8A = .099k
*7A = .081k
Wider Amp adjustment:
*Disconnect, or remove R33 & R38.
*Replace with adjustable "pot"
*Reasonable sampling of actual measures - remainder estimated)
*Amps ........ Ohms
*7A ... from ... 70 ohms
*8A ... from ... 83 ohms
*9A ... from ... 97 ohms
*10A ... from ... 110 ohms
*11A ... from ... 124 ohms
*12A ... from ... 138 ohms
*13A ... from ... 149 ohms
*14A ... from ... 164 ohms
*15A ... from ... 177 ohms
*16A ... from ... 191 ohms
*16.8A ... from ... 200 ohms
*17A ... from ... 205 ohms
*18A ... from ... 220 ohms
*19A ... from ... 230 ohms
*20A ... from ... 240 ohms
*21A ... from ... 255 ohms
*22A ... from ... 270 ohms
*22.25A ... from ... 275 ohms
*23A ... from ... 285 ohms
*23.6A ... from ... 296 ohms
*24A ... from ... 302 ohms
*25A ... from ... 317ohms
*25.37A ... from ... 320 ohms
*26A ... from ... 329 ohms
*27A ... from ... 342 ohms
*28A ... from ... 356 ohms
*28.37A ... from ... 360 ohms
*29A ... from ... 368 ohms
*29.59A ... from ... 375 ohms
*30A ... from ... 380 ohms
*30.54A ... from ... 387 ohms
*31A ... from ... 393 ohms
*32.A ... from ... 407 ohms
*32.5A ... from ... 415 ohms
*33A ... from ... ohms
*34A ... from ... ohms
*35A ... from ... 436 ohms
*36A ... from ... ohms
*37A ... from ... ohms
*38A ... from ... ohms
*39A ... from ... ohms
*40A ... from ... 512 ohms - oem
*41A ... from ... ohms
*42A ... from ... ohms
*43A ... from ... ohms
*44A ... from ... ohms
*45A ... from ... ohms
*46A ... from ... ohms
*47A ... from ... ohms
*48A ... from ... ohms
*49A ... from ... ohms
*50A ... from ... ohms
*etc.
Widening the voltage range - SVR1 Mod:
*By changing the value of the Voltage pot, I was able to lower the output range substantially.
*1K = 4.5 - 5.4V (oem)
*2K = 3.74 - 5.4V
*5K = 3.12 - 5.4V (not recommended)
*10K = 2.84 - 5.4V (not recommended)
*
*Running a 1k resister in series with the oem 1k pot should give me a 3.74V - 4.5V range as a dedicated 1s Li-ion charger.
*As I will demonstrate later, there can be great advantages to lower voltages.
Note! The higher value pots (10K etc) only allow a very "coarse" adjustment at the high voltage end. Harder to fine adjust.
Lowering Voltage
*Lowering voltage could take advantage of higher amperage.
*Without removing components, amperage is regulated below ~?Amps.
*R33, combined with it's neighbor R38, have a measured resistance of 614 ohms.
*Removing both and replacing with a 2K pot allowed me to produce a ?A supply.
*(?K setting. Will compile a chart for higher amperages - requires a higher capacity = less accurate amp meter.)
Component View
2004 - 08 - 27
R25 Mods - Lower Voltages
*R25 Mod
*The voltage adjustment pot (SVR1)limits voltage adjustment between 4.5V - 5.4V. It is possible to adjust voltage lower, but not higher, using a "larger" than 1K pot.
*However, the SVR1 pot is "in series" with the R25 resister.
*Altering the value of the R25 will shift the entire voltage range higher or lower
*oem value of R25 is 887 ohm.
Providing an 887 - 1887 ohm adjustment = 4.5V - 5.5V
*Adding a 1k resistor in series as 1877 ohm.
Providing an 1887 - 2887 ohm adjustment = 3.74V - 4.5V
Replacing R25 with a 2k resistor should provide ~3.5V - ~4.3V (great for Lithium Cobalt ... and might look prettier?)
Raising Voltage?
*Not tested ... or recommended!
*This model has 25V caps!
150 Watt!
*To be safe and effective, amperage should be adjusted as voltage is altered.
*Volts x Amps = Watts
*Watts should equal, or be slightly below, 150 watts.
*5V x 30A = 150W
*4.5V x 33.3A = 150W
*4.2V x 35.7A = 150W
*4.15V x 36.1A = 150W
*4.1V x 36.5A = 150W
*4V x 37.5A = 150W
*3.65V x 41A = 150W
*3.5V x 42.8A = 150W
*3.2V x 46.8A = 150w
*3V x 50A = 150W
*2.5V x 60A = 150W
*2V x 75A = 150W
*1.5V x 100A = 150W
*1.4 x 107A = 150W
*Yeah ... I'm gonna try pushing everything to the limits ... and then a little further!
(Will test to confirm)
Component Locations
In Series
----
*"In series" is when the DC negative of one power supply is run through the DC positive of another - combining their voltages.
Important!
*When run in "series" the DC "negative" must be isolated from the 110AC negative ... on all but the primary unit!. Otherwise, the DC positive from the primary unit will "short" through the AC negative on the secondary unit.
'''The negatives are usually connected through the "ground".'''
*3 points of "ground" to remove.
*The external ground - terminal 3.
*The green wire, at F1 near terminal 3.
*The bottom of the circuit board, under screw hole next to fuse. (Cut circuit traces, or insulate with ... fiber, or nylon, washer and screw?)
* The case can be "properly" grounded by connecting the AC ground wire to the removed green wire directly.
MeanWell Mods
S-150-5
S-150-12
S-150-24
S-150-48
S-240-48
S-350-48
