Anyone into crazy high voltage stuff? 250v to 5000V power supply. I´d be scared to have it on my bench. What if you slip when adjusting voltage?
Check out this Ebay item
SHANDON VOKAM 5000-250V laboratory electrophoresis psu on eBay (end time 10-Apr-11 17:01:35 BST)
Check out this Ebay item
SHANDON VOKAM 5000-250V laboratory electrophoresis psu on eBay (end time 10-Apr-11 17:01:35 BST)
Done PCB@S and mechanicals for PSU's for electron microscope dev, 35kV 10kV and a few 1-1.5kV in same box, got to take care. Special connectors with extra long path for creepage, 10mm polycarb sides, 20mm gap then second layer. Interesting when things go wrong🙂
I bought a 3kV electrophoresis supply a few years ago to check and reform HV caps from my Nd/Yag lasers. Super handy and they can be had CHEAP on ebay.
You know 50 t0 500 volts is the most dangerous range. Higher voltages usually jolt you off the connection.(unless they can also source high current like transmission lines). So building big power amps can be more dangerous than working with neon transformers (17kv?).
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I remember the first time I got zapped on a speaker cable.
At the time I didn't realize that there was in excess of 120v p-p until I went back and did the math as it was a rather large amplifier(yeooow)! jer
At the time I didn't realize that there was in excess of 120v p-p until I went back and did the math as it was a rather large amplifier(yeooow)! jer
Today at work I ran a test dumping 14 volts and 730 amps into a single heat sink using 3 IGBT's. The voltage is not too high, but still 10,000 watts into a sink is pretty impressive. 3.6 gallons per minute of water to keep the devices under 70°c I will be keeping my eyes out for sinks going in the bin. The power supply would be fantastic for a true pass monster, but those don't ever go in the bin.
Hmmm, I was mocked for my habits of "dumpster diving" at my former employer. Of course, due to this habit, and others, I have no space in my basement, and a bloody mess in my apartment. And I am the landlord!
I do however have some rather interesting items around here.
Peace,
Dave
I do however have some rather interesting items around here.
Peace,
Dave
Trondareo, Electrophoresis power supplies do not generate much current so don't know how much use they'd be on the bench except for capacitor reforming. Electrophoresis is done on the wet lab bench by students on upwards and results in few if any deaths.....
My day job is electron microscopy @ 200kV.... the HT power supplies live in refrigerator sized cabinets filled with SF6 gas and though mighty impressive to behold (and very complex as the HT needs to be ppm level stable) can usually only generate about 100 microamps (the end result of all this is an electron beam of some nanoamps...).
My day job is electron microscopy @ 200kV.... the HT power supplies live in refrigerator sized cabinets filled with SF6 gas and though mighty impressive to behold (and very complex as the HT needs to be ppm level stable) can usually only generate about 100 microamps (the end result of all this is an electron beam of some nanoamps...).
I checked with the seller. This supply delivers up to 800mA, but that would probably be at 250V rather then 2kV. It should be sufficient for anode current for the lower voltage tube designs I like.
It should even manage to power two 6c33c´s at moderate current
(250mA each or so)
It should even manage to power two 6c33c´s at moderate current
(250mA each or so)
you should get 100-200W out of it, so at the lower voltages you'll be ok. Wonder what the filtration is like? The heatsink is impressive too. Wonder why they are selling it....?
The units are usually rated in Watts. Mine automatically limits output current based on Power output.
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