Film-Tech Forum ARCHIVE: Rectifier current regulation

This is topic Rectifier current regulation in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Marin Zorica (Member # 1716) on 03-29-2004, 09:15 AM:

Hello;

in my house I've got a couple of rectifier parts like transformers, diodes, regulation transformers and stuff like that. I've got here one summer theatre and in that are two projectors with Osram XBO OFR 2.5KW bulbs, one rectifier is working fine, but other is dead some parts are put out, transformer is dead and so one. Because i have three phase transformer (3X33 Amps, and about 25 volts on secondary side), diodes (they are 160 amps each), coolers for them and all i need to built rectifier with that three phase transformer, six diodes as rectifier and coli and capacitors for DC stabilizing, but for regulation i can only put a regulation transformer in primary Ac circuit of transformer and that gives me a six steps of regulation of output current, but i won to built a bit modern rectifier, only think i wan to be more modern is output current regulation. I also have strong thyristor and triac for this aplications but because this is three phase stuff and phase are moved for 120 degree each other and similar things i need a some schematic and advise how to do this. If somebody work already with this let me know and tell me you're opinions.

Marin

Posted by Marin Zorica (Member # 1716) on 04-01-2004, 04:25 AM:

Come on people, does nobody don't have any kind of ideas for this, please think a little bit of this.