Reddit reviews MEAN WELL LRS-350-12 348W 12V 29 Amp Single Output Switchable Power Supply
We found 4 Reddit comments about MEAN WELL LRS-350-12 348W 12V 29 Amp Single Output Switchable Power Supply. Here are the top ones, ranked by their Reddit score.
Primary output voltage (vdc): 12Output current (a): 29Maximum output power (w): 350Family: lrs-350Input voltage (vac): 90 to 132, 180 to 264
If its factory yes. They are cheap Chinese power supplies and will go bad. First the fan will start making noise usually, then things go bad from there. Go to amazon order you a meanwell. This one here MEAN WELL LRS-350-12 348W 12V 29 Amp Single Output Switchable Power Supply https://www.amazon.com/dp/B0109IMRPS/ref=cm_sw_r_cp_apa_i_tdO3DbC8JMAXM
A lot more supplies these days are switching. The cost and efficiency are too good to ignore, and most hams are starting to get over their fear of them now that technology has improved.
I cannot speak to the quality of the $20 one on amazon, but it is a direct knockoff of a MeanWell supply (whose prices are also VERY competitive) The company I work for now uses MeanWell supplies for some of our products.
If you can, try to find the spec on the switching frequency, the higher it is the better off you will be (the easier it is to filter).
See my submission of using a Meanwell LRS-350-12 for a go-box: http://imgur.com/a/Wzn1g
You'll see I did have to make a small filter to make the supply totally quiet on 160 and 80 meters, you can also just use a long thick cable as a quick filter but that's not recommended due to the losses.
LRS-350-12 on amazon: https://www.amazon.com/Mean-LRS-350-12-Switching-Power-Supply/dp/B0109IMRPS
Do consider paying a few more bucks for an on brand supply, there are things you can cheap out on, but the thing that sits between your mains voltage and your LVDC powering our expensive rigs should NOT be one of them.
The original power supply is junk. Here's what I replaced mine with: https://www.amazon.com/gp/product/B0109IMRPS/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
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When I hit "preheat PLA", you don't even hear the fan change speeds. Works good!
No problem. 60 feet is 18.3 meters. At 18 watts per meter, you will need to drive approximately 330 watts. Divide the watts by volts and you get about 27 amps. That is not something you will get out of plug in wall adapter. Something like this will work. If you worry about fan noise, then this. I would lean towards the fan however.
You will need 4 rolls of LED tape and I would stick the repeater output in the middle somewhere. Where you place the components is up to you but just be conscious of voltage drop if they are far away. You may need to use the voltage adjustment screw on the power supply to bump it slightly so you get a solid 12volts at the connection points.