#342

Рет қаралды 271,710

4 жыл бұрын

We want DC power! For Neopixels, for example. Or for battery charging. Or for radio stations. Our power supply has to be strong and stable. Strong means in this case: More than 60 amperes at 12 volts or so. And, these days, it also has to be good for the environment. But it should cost less than 20 dollars. Including shipping. Unbelievable? That is what I thought, too. Till I discovered second-hand server PSUs
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Links:
My HP HSTNS-PL18 750W PSU: ebay.to/2VklriY or ebay.to/2Bp5dhs or amzn.to/3ibw69j
Connector for these PSUs: s.click.aliexpress.com/e/_dXy3yeu or ebay.to/3i999DA or ebay.to/2BIdJYS
ESP-01 with relay: s.click.aliexpress.com/e/_dYbF4K4
Tasmotize the ES=-01 relay: www.loxwiki.eu/display/LOX/ES...
Near Field Probes: s.click.aliexpress.com/e/_dZi4CTm
Good information about pins: colintd.blogspot.com/
German video about PSU electrical noise and its removal: • Video
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Пікірлер: 1 000

@d3vastat0r89 4 жыл бұрын

Lol this dude is a savage. "Film your endeavor"

@Zellonous 4 жыл бұрын

Wtf. A good server grade psu for 20 bucks but a consumer desktop that is of similar quality is over 100. I'm so cheesed

@vk3fbab 4 жыл бұрын

I have an IBM blade centre PSU. Over 200A. Managed to get it to 14.2V and it can charge my dual 1000CCA starting battery AND 200AH deep cycle battery all at once. Most I have pulled is 80A. Cost 50AUD brand new. Great value.

@rhiantaylor3446 4 жыл бұрын

Server PS will also have excellent power factor.

@sincerelyyours7538 4 жыл бұрын

I've had three HP 1200 watt 12V supplies for the past 5 years and use two in series to power my 24V Li-Ion battery charger. Note that if you put them in series, one must have its DC ground isolated while the other retains both its AC and DC grounds. Otherwise you'll get sparks if the metal cases come in contact with each other and possible internal damage as well. As these are SMPS supplies they can accept AC inputs anywhere from 100V to 240V, but you won't get maximum current out unless you power them with 240V.

@Eagleoneradiogod 4 жыл бұрын

Film your kitty cat. She is sooooooo cute! I hope it's a she ,otherwise I look like what I am really am stupid.

@denisdespins1127 3 жыл бұрын

Hello, with a name like mine you probably know where I'm from instantly. Don't be put off by your accent, it's great and I don't give a rip what anyone says. Think of it as your awesome trade mark. Press on making lots of videos. I love it and I'm going to share it like crazy. Have a great day sir.

@NicksStuff

You don't want 60A to

@Electronics-Rocks 4 жыл бұрын

Just don't give up as you can always grab a bargain on eBay as stuff is miss labels or sellers can not be bothered I found few on "server power supply" good hunting as will go fast. With server turnover there will always be available just a supply and demand.

@StefanoBettega 4 жыл бұрын

I have an old Dell server in wich both power supply were performing bad. After opening them I found four capacitors slightly swollen. I changed them with other parts coming from a thrown away PC PSU and they are now good again. So if you buy second hand PSU from eBay my suggestion is to open them and check all of the capacitors with your eyes, no need for a special and expensive instrument... But do it in a safely way!!

@getyerspn 4 жыл бұрын

Good man ..I've been doing this for many years ...I have a 4 draw filing cabinet full of used Siemens/ Fujitsu/ dell/ hp and so on server psu's all 100% free.. most companies have to pay to have these disposed of as wee waste in the UK so are most happy for me to take them... I've gotten a bit of an obsession with collecting free psu's .

@zapador 4 жыл бұрын

Great tip! Just grabbed 4 of them on eBay shipped from the UK, total 48£ shipping included.

@tonysshadow 3 жыл бұрын

Thank you!. A very good start for identifying pinout on all HP power supplies. I suspected the pins had to have similar functions to a normal ATX power supply....and they do.

@Sliceoflie 3 жыл бұрын

Great video! I looked into doing something like this last year with a spare consumer PC PSU I had laying around. I also wanted to modify the voltage to be 13.8V for radio use and looked into tutorials on the process. However in nearly every one I found, making the modification either bypassed or otherwise removed almost all safety features such as under/over voltage and short circuit protection. That alone made me not want to make the modification, but then I took a closer look at some other parts in my particular PSU. Some had absolute maximum voltage ratings of as low as 14V, which I felt was way too close to 13.8V to have any safety margin. So instead it remains a 12V powerhouse for LEDs and charging other devices using buck/boost converters.