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Registered Member #4074
Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335
A recent photo from my current endeavour to get the largest, most destructive arcs out of a single MOT :D
The setup has a MOT with a tiny little toroidal choke on the input and 5uF of capacitors on the hot side. The transformer boils after about a minute :)
Registered Member #4081
Joined: Wed Aug 31 2011, 06:40PM
Location: UK
Posts: 139
GBD: Quite a collection you have there ;) what voltage are they? you could make a very primitive vehicle, or a spot welder? XravenorX: Very nice, looks like an explosion! just cut up my MOT, decided its far too dangerous for me. Bet the primary is enjoying its little 'heat treatment' ;)
Registered Member #2628
Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
They are 385v/4700uF... not much use other then to make things go bang and to act as a filtration device. (not enough capacitance for vehicular use, and for spot welder, well, it mostly vaporizes then welds)
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
GBD wrote ...
They are 385v/4700uF... not much use other then to make things go bang and to act as a filtration device. (not enough capacitance for vehicular use, and for spot welder, well, it mostly vaporizes then welds)
That makes for 55,732.6 Joules if I'm not mistaken... Particular project in the works?
Registered Member #2628
Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
That is correct, or 289.6 Coulombs for a 160 bank.
Im only making a bank of 16 for now for some ETG experimenting.... should I ever feel like turning gun into cannon.. I guess thats a project on its own.
Registered Member #4074
Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335
Harry wrote ...
XravenorX: Very nice, looks like an explosion! just cut up my MOT, decided its far too dangerous for me. Bet the primary is enjoying its little 'heat treatment' ;)
Haha, yeah the arcs grow to about 40cm and are too bright to look at directly. I can hear the windings creak as it cools down, so I doubt it'll last much longer, but I have 2 more to replace it, and a big 3 ohm resistive grid to use as ballast. I wonder if 2 MOTs can handle 19.2kVA >:D
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