Trying to re-purpose high voltage power supply. Need help

It's a pretty simple bunch of unregulated DC supplies - you can measure the outputs if the circuit can be powered (CAREFULLY - there are potentially fatal voltages in there!)

If the circuit is just 'theoretical' you could still fabricate one. A dedicated transformer with multiple windings or separate transformers with appropriate secondary voltages is all that is required - apart from the rectifiers/smoothing etc. It's not difficult to replicate.

There are a mix of high voltage/low current and low voltage/high current outputs. A guideline to the outputs can be determined by the fuse ratings and smoothing capacitor voltage ratings.

BR1 seems to be a negative high voltage (around 100-120V) at a few 10's of milliamps.
BR2 could be around 30-36V at 10A
BR3 could be plus and minus 30-36V at 5-6A
BR4 could be 100-130V at a couple of hundred milliamps
BR5 could be around 60V at 10A+

all supply outputs are GUESSWORK at this stage based only on component ratings.

The separate diode at the top seems to add a high (??) DC voltage to the output from BR1

 

Use the 27-0-27 taps to create a variable DC supply with + and - rails.

Don't bother with the rest of the tappings.

Unless you're after a particular volt span????

 

If all you want is a high current 12V supply then salvage an old PC power unit. Using that transformer will require significant linear regulation that would make the result both cumbersome and hot - unless you used the DC to feed a buck converter rated to the current demand you have.

Those 'tin can' capacitors are actually 'line filters' intended to be placed in line with the incoming AC to filter noise going in and out.

I take it your meter was set to AC for the transformer winding measurements and DC for the voltages after the rectifiers?

 

Yes, that's how the filters are connected. Measure between the two terminals and report your results (resistance).

Measuring the AC at 14/15 on the transformer shows 18VAC (?) which, under normal circumstances, will rectify/smooth to approximately 26-28V DC across C5 (terminal 2 -ve, terminal 3 +ve). Check the 12A fuses.

Measuring 27VAC at 12/13 and 11/12 on the transformer should result in around 40V across terminals 25-/26+ and 24-/25+ (a total of around 80V across 24/26). Check fuses again.

There are many opportunities to obtain SMPS supplies on eBay - keep looking!

I'm fully onside with your policy of making stuff - check out this kit for making a variable PSU (0-30V 0-3A, current limited):

http://www.ebay.co.uk/itm/Red-0-30V-2mA-3A-Continuously-Adjustable-DC-Regulated-Power-Supply-DIY-Kit-PCB/201751652278?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

at $6 (around £4) I got two!

It requires a 24-28V AC input.... how convenient.

 

I suspect it's an in-line filter module. The internal capacitors are likely connected to the casing.

Most such filters I've seen have two terminals at each end for the live and neutral in/out but IIRC the older, higher power, versions had one such for each line.

The resistance check should reveal the answer.

 

Like I suggested measure the resistance from one terminal to the other. If it shows a 'short circuit' then they go as I said.

If they measure open-circuit they go across the line/neutral as davenn says.

 

I'd guessed they were a pi-type filter - capacitors across input and output with a series inductor between them.

The picture showing them in-circuit appears to show the neutral line connected to only one of them too.