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PTR_1275:
Hi guys,

Fairly new here, but I have been salivating my way through the pages of power supplies. Good to see some TTi power supplies and I'm surprised that I haven't seen many "Big" power supplies.

I do a little bit of electronics work, small level PIC work mostly, then the main work I do is testing battery chargers and solar regulators for battery charging, so I need a fair bit of current for testing them. The lab isn't where I would like it to be but when compared to a year ago I have added a lot of extra stuff. Currently I have 5500w of DC load bank capability in the rack with a HP 6050 mainframe on the way.

Power supplies that I use are

TTi PL330. 0-32v 0-3a linear supply
Manson 0-32v 0-21a SMPS
The big one (Recently bought) HP 6012A. Really cool auto ranging 0-60v 0-50a (Maximum of 1000w).
dom0:
70 V (+-0-35 V), 500 mA supply. Transformer is grossly over-dimensioned ; probably has something like 200 VA. Based on HP schematics. Heat sink is dimensioned for ambient temperature of 50 °C.

Adjustable tracking ratio with calibrated 1:1 (actually... 1:-1) position ; adjustable current limit for both channels at once. Two digit meters, very fast -> transients are easily observed. Separate output on/off switch.

Total weight about 4.7 kg. Case is a recycled steel drawer with aluminium top and back panels. Transformer mounted flipped on steel beams.


Very handy, used it all the time even before I completed the meter lately.
Whales:
I've just obtained a mains->~12Vx20A  toroid.  Once I'm finished my current project I'm going to rewind this and make myself a ~24V variable power supply with current limiting. 
4cx10000:
First picture, yeah I know real bad, on top right of the instrument shelf is a Thurlby. Had it for years but now I'm planing to order a TTi CPX400D, any comment on that PSU?
steve30:
Here's a picture of my PSU. It is shown powering a couple of white LEDs. I retrofitted my own variable linear PSU board into the old fixed output PSU.

It gives a fixed +5V (up to a couple of amps) and -5V (a few milliamps), and a variable 2.2V to 24V @ just over an amp.

The red panel meter measures current in mA, and the green panel meter reads the variable voltage. It really could do with some better panel meters as these cheap ebay ones aren't too accurate. The blue 10 turn pot adjusts the voltage and the silver single turn pot adjusts the current limit. Obviously things need mounting in the case properly.

The circuit design isn't excellent but it works reasonably well for my use. Hopefully I'll make a page on my website about it in due course.
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