One great thing about working in a chemistry lab is that I often get first dibbs on old or obsolete equipment before it goes to salvage. Usually it is a little boring and a few parts get saved for future lab projects or to repair old equipment, but sometimes there is fun stuff that is worth getting excited about. Today was the mother of all "dumpster dive" moments, and I figured I would have to share it with some people who could appreciate it! I have not finished the total component count, but after 2 X 24VCT 12A transformers and 70 2200 uf 200V caps, I think I will be able to put together a power supply that will be able to drive half of my home town!!!
A few other goodies were some transistors, several nice high voltage diodes, a 60A bridge rectifier, some switches and a step up transformer. Not sure what I will do with that last transformer, but I am certain I can find good homes for the other components!!!
A few other goodies were some transistors, several nice high voltage diodes, a 60A bridge rectifier, some switches and a step up transformer. Not sure what I will do with that last transformer, but I am certain I can find good homes for the other components!!!
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So far I have had time to run 8 of the caps through our tester, and they are all fine. I hope the whole shooting match works out!
This weekend I will probably start putting together a PSU for a multi-chanel chip amp I have been toying around with building. Since the combined transformers would be ~600 VAC, I figured I would be able to run at least 6 chanels off of the PSU. I was thinking maybe 8, but I'm not sure if I should push it. . .
Any opinions?
This weekend I will probably start putting together a PSU for a multi-chanel chip amp I have been toying around with building. Since the combined transformers would be ~600 VAC, I figured I would be able to run at least 6 chanels off of the PSU. I was thinking maybe 8, but I'm not sure if I should push it. . .
Any opinions?
you could always make a rail-gun with all those caps!
i work next to the engineering department here in a medical manufacturer... always great finds! I pulled 4 nice big aluminum heatsinks and 4 transformers out of the trash last month. they were 220vac/24vac, but here i have 110vac, so theyre 12vac. so what if i gotta tie 'em all together, free is free!
i work next to the engineering department here in a medical manufacturer... always great finds! I pulled 4 nice big aluminum heatsinks and 4 transformers out of the trash last month. they were 220vac/24vac, but here i have 110vac, so theyre 12vac. so what if i gotta tie 'em all together, free is free!
elementx said:
😀
I think my wife would be a little upset with that idea!
I was actually thinking of making sure all of them are in good shape and trading them off for other parts in case anybody was interested. I even have the ability to "hand match" parts! 🙂 Anybody need a @#$%# load of 2200 uf caps??
No doubt! That's what I am going to have to do with mine as well. I guess you could argue that I am using a different transformer for each rail! 😀
This is all from a telephone company, they have technical assistance contracts with their clients and they replace parts regularly so that they don't have problems.
Most things are in perfect working order.
These batteries are fine, I have four of these, and many smaller ones (4A/h and 7A/h), selected from the trash bin with a multimeter. 😀
Most things are in perfect working order.
These batteries are fine, I have four of these, and many smaller ones (4A/h and 7A/h), selected from the trash bin with a multimeter. 😀
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Re: Diving is the best
Ottawa is a GREAT town for dumpster diving.
I have no shame. And...the price is always right.
I wonder what people would think, seeing some guy in a BMW drive up to dumptser..and dive right in. 😛
time for my ottawa 'dot com' industrial downsizing story!
My brother in law used to work for a company that made very, very high energy, extreme grade power supplies for laser systems.
When the company went down...they threw out ....a bunch of Plitron Toridial transformers, multi tap, all in the 1500-2000 VA range. All high voltage. The kinds of voltages that are perfect for tube amps.
One ENTIRE FULL dumpster of BRAND NEW, IN THE BOX units.
I never found out about it until too late. Had to be at least a $1/4M in trannies in that dumpster. True story, I got it directly from the guy who's job it was to fill that dumpster. My Brother in law, the laser tech.
I wonder who got them?
mwmkravchenko said:
Ottawa is a GREAT town for dumpster diving.
I have no shame. And...the price is always right.
I wonder what people would think, seeing some guy in a BMW drive up to dumptser..and dive right in. 😛
time for my ottawa 'dot com' industrial downsizing story!
My brother in law used to work for a company that made very, very high energy, extreme grade power supplies for laser systems.
When the company went down...they threw out ....a bunch of Plitron Toridial transformers, multi tap, all in the 1500-2000 VA range. All high voltage. The kinds of voltages that are perfect for tube amps.
One ENTIRE FULL dumpster of BRAND NEW, IN THE BOX units.
I never found out about it until too late. Had to be at least a $1/4M in trannies in that dumpster. True story, I got it directly from the guy who's job it was to fill that dumpster. My Brother in law, the laser tech.
I wonder who got them?
Those look great! It's always nice to pick up something that you have an immediate use for.carlosfm said:
Heres a pic that includes a few dumpster items, 1uF 20kV Kondensator (cap)- the one with the really big insulators, 13uF 6.8kV cap, and a large current transformer. The curent transformer is the orange thing in front of the 20kV cap and to the right of the 13uF cap. From VOA Bethany.
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Lol, I bought my first broken amp from a market this weekend...
It has a TDK chipamp in as big as my palm nearly.... gonna rip the internals out and modify the face etc... also its got quite a heavy 60V trafo in, so hello VBIGC, got a couple of film and foil caps in also, that i may pirate..
It has a TDK chipamp in as big as my palm nearly.... gonna rip the internals out and modify the face etc... also its got quite a heavy 60V trafo in, so hello VBIGC, got a couple of film and foil caps in also, that i may pirate..