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7Kw+ PSU

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Thomas W
Mon Apr 02 2012, 08:33AM Print
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Basicly, the goal of this project is to create a 7Kw or more PSU for everything cheesey

it will have a Variac (Ancient 7.5K.V.A Zenith made in about 1950's id say)

the case is a old JSB Powerlight ~(7ft * 2.5ft * 2ft) and a old NovaMill Black Box ~(2ft *2ft * 1/2ft)

Im also planning a Saturatable Reactor made from to HUGE 24-0-24 to 170v transformers (put in series )

Pictures:
Picking up the Main Case from London (3 hours there and 3 hours back cry )
TXH9bs
Troll Dad got in the way mistrust
UzU89s

7fhcOs

Hkm3ss
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ZakWolf
Tue Apr 03 2012, 02:33AM
ZakWolf Registered Member #3114 Joined: Sat Aug 14 2010, 08:33AM
Location:
Posts: 608
wow, very nice :)
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teravolt
Tue Apr 03 2012, 04:09AM
teravolt Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
what was it used for and what are you going to use it for. maby a big tube supply
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Thomas W
Tue Apr 03 2012, 08:13AM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
hehe, thanks, it was a ould backup powersupply for a block of flats, the last owner taken the battarys for his soler panels, i havent got any tubes to run on it saddly. its more of a "occupy time" project
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Thomas W
Mon May 07 2012, 11:37PM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Ok then, updates:

-selling off stuff to buy more parts

-building a decent bridge rectifyer and smoother module for the output that is bypassable for AC instead of DC

-working out how to build current limiting in... saturatable reactor?.. anybody know much about them?

-looking for a servo for the variac, planning to try make the entire project computer controlled potentialy..
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Inducktion
Tue May 08 2012, 01:27AM
Inducktion Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
You could implement current limiting by adding a current sense resistor and an op amp feedback circuit.
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Thomas W
Wed May 09 2012, 09:32AM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
i have no understanding of such black magic! confused
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Pinky's Brain
Wed May 09 2012, 03:04PM
Pinky's Brain Registered Member #2901 Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837
I think he misread your intentions and thought you were making a regulated supply ... instead of just rectifying/smoothing the variac output.

I'd just use a triac to limit the AC current rather than a saturable reactor ... neither of those can limit the current from the DC smoothing capacitor though, which at 50/60 Hz has enough energy to do quite a bit of damage.
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Thomas W
Sun May 20 2012, 08:30PM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
i want to make a regulated supply indeed
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ConKbot of Doom
Sun May 20 2012, 10:52PM
ConKbot of Doom Registered Member #509 Joined: Sat Feb 10 2007, 07:02AM
Location:
Posts: 329
7kw, and just plug it right into your standard household outlet... lucky UKers.
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