Old power supplies still seeing some form of use?

I just had to use my oldest power supply today, and it made me wonder if anyone else has old PSUs still seeing use, whether that be in a PC, or in some other manner.

My oldest is from 1996 if I recall correctly (EDIT….looking at the pic it looks like its actually from 1997). It was from my parents PC that they got when I was in living at home and powered a pentium pro 200mhz and was used until the early 2000s. Eventually I got them a better computer used, and while most of the PC was disposed of I grabbed the PSU. I modified it to have the 12v lines and grounds to the top in terminals for general use. I later added a 5v post as well. It sees use probably once a month for 12v air matress pumps, 12v air compressor for tires, or just playing around with fans and whatnot. Using the compressor for tires often shuts it down, but after a few tries it runs...lol.

Any one else have old PSUs kicking around?

My handy dandy car adapter:

Dude that is awesome. I was using some old ones to test pumps here and there but never thought of converting one for home use.

Damn that psu is old I would of been 10 when you had that system. Think I was still running a 486 then think my sisters had pentiums  then and so did my brother haha.

Thanks for sharing this 🙂

@Soullessone21:

Dude that is awesome. I was using some old ones to test pumps here and there but never thought of converting one for home use.

Damn that psu is old I would of been 10 when you had that system. Think I was still running a 486 then think my sisters had pentiums  then and so did my brother haha.

Thanks for sharing this 🙂

Haha. Apparently I am not thinking this morning…I wasn't in high school (had to modify the original post). I would have been 14 if they got it in '97. It was the first family PC we had.

I will definitely be modifying another when this one eventually dies. I got the adapter from Radioshack as they were clearing many things out in the conversion to the source.

I'm impressed it still works, normally capacitors do not have that long of life spans.

@Arinoth:

I'm impressed it still works, normally capacitors do not have that long of life spans.

I am surprised as well. I doubt it would remain within any normal tolerances on any rail, but it works for my uses. I should open it up and see how the caps are looking out of curiosity.

Surprisingly caps still look good. No bulges or leaks.

You can also see the green resistor in the back that I had to put in the 5v line to get it to stay on.

At work in one of our mobile control rooms I used a old one to power a Wilson cell phone booster. Worked great!

Also my cousin and I used one to power this car stereo system we installed into his snap-on tool box. That was a fun project. We used 2-6" and 2-6"x9" speakers.  This thing was really loud.

When I first moved into my house I used one for temporary stereo in my garage.

@Arinoth:

I'm impressed it still works, normally capacitors do not have that long of life spans.

For typical computer applications you should see 30 years from reasonable quality through-hole electrolytic capacitors that are not affected by the plague.
Surface-mount electrolytic caps seem to last more around 15-20 typically, depending on environmental conditions and tolerances in the circuit. Or at least, ones made 15-20 years ago are failing at this point.

As far as oldest PSU goes, it is no surprise to people here that I have an IBM 5150, Apple IIc, and a pair of Mac Pluses. Those are not even all that old!

@Oelmuvun:

For typical computer applications you should see 30 years from reasonable quality through-hole electrolytic capacitors that are not affected by the plague.
Surface-mount electrolytic caps seem to last more around 15-20 typically, depending on environmental conditions and tolerances in the circuit. Or at least, ones made 15-20 years ago are failing at this point.

As far as oldest PSU goes, it is no surprise to people here that I have an IBM 5150, Apple IIc, and a pair of Mac Pluses. Those are not even all that old!

Lets see some  photos of how  your old computers are holding up.

I have seen motherboards that have bloated and leaking caps when they are "only" 5-6 years old. I sure sometimes a lot sooner than that.

@Bond007:

I have seen motherboards that have bloated and leaking caps when they are "only" 5-6 years old. I sure sometimes a lot sooner than that.

https://en.wikipedia.org/wiki/Capacitor_plague
You can also kill an electrolytic capacitor faster by abusing it with lots of heat, voltage, etc.
Tantalum ones will explode with too much voltage or wrong polarity! hehehe

These pics are a couple years old, but work.
IBM 5150: (only has tants from the factory!)
http://www.poopr.org/images/4p69j2i2e6rl00h467jn.jpg
IBM 5160 PSU: (5160 PSU is higher output than 5150 PSU)
http://poopr.org/images/52160093804310368667.jpg
Apple IIc: (still mostly tants, stock)
http://www.poopr.org/images/x4uvjhc3vn5ao8a6wvo8.jpg

I do not have Macintosh Plus pics atm.

These are a couple of the boards that got tantalum capacitors to replace the old leaky SMT electrolytic ones.
LC 630: http://www.poopr.org/images/th1stvef3al7ee68hch.jpg
LC 575: http://www.poopr.org/images/10387421852135320505.jpg

Unrelated: (no, I have not started restoring it yet.)

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