Meanwell-Megawatt-Cheapowatt VENTILATION
All of these units must be raised up so they do not sit flat against the floor. They need feet at least 1/4" tall. Now owning all three types I can vouch for the fact that laying flat decreases air fl...
Forum Discussion
Where temps are critical, say 40c or higher and the PSU is working at capacity I definitely recommend the units not be placed on their side. Inside a compartment the ambient temp may be significantly warmer than what a person may think.
The newer Megawatts the 36-amp model got a higher velocity fan installed. The Cheapo has by far the noisiest fan but it moves more air than the older Megas or Meanwells. The middle in the noise dept is the newer Megawatt and the quietest is the Meanwell.
The Megawatt is by far the heaviest of the three.
My current upgrade to the BORG is thick aluminum end plate fascia, a pair of 120-volt green indicator lights. New calibrated 15-turn pots, an original pot to adjust the float voltage. Need a much bigger heat sink on the 8305 7.5 amp regulator chip. The float has a capacity of 3.75 amperes. Max capacity seems to be 82.2 amperes. I used RustOleum bed liner on the case. A "guitar case" strap handle. Need stainless steel S straps to wind charger and power cords.
What a fun project!
PS: I ended up choosing a pair of Megawatts the newest 36-amp model. The 60-amp won't fit the case.
At least my crippled body can carry this thing. I also need to get some 1/16" stainless aircraft cable and have been thinking about a switched tilt alarm with a screamer piezo emitter for theft resistance.
The newer Megawatts the 36-amp model got a higher velocity fan installed. The Cheapo has by far the noisiest fan but it moves more air than the older Megas or Meanwells. The middle in the noise dept is the newer Megawatt and the quietest is the Meanwell.
The Megawatt is by far the heaviest of the three.
My current upgrade to the BORG is thick aluminum end plate fascia, a pair of 120-volt green indicator lights. New calibrated 15-turn pots, an original pot to adjust the float voltage. Need a much bigger heat sink on the 8305 7.5 amp regulator chip. The float has a capacity of 3.75 amperes. Max capacity seems to be 82.2 amperes. I used RustOleum bed liner on the case. A "guitar case" strap handle. Need stainless steel S straps to wind charger and power cords.
What a fun project!
PS: I ended up choosing a pair of Megawatts the newest 36-amp model. The 60-amp won't fit the case.
At least my crippled body can carry this thing. I also need to get some 1/16" stainless aircraft cable and have been thinking about a switched tilt alarm with a screamer piezo emitter for theft resistance.
