LM 723 Dual PSU

Hi everyone,

I would like to build an LM 723 dual PSU, does anyone possibly have a schematic or a project stashed somewhere in a back issue of a magazine, I know Elektor featured a lab psu like this sometime back? I did build a LM 723 single rail supply but I have on occasion found the need for for '+ & -) supply rails and as I am familiar with the LM 723 why not take it a step further. In case you are wondering why I don't use the more simpler LM 317& 337 which is a lot easier to put together, god knows there are heaps of these circuits available on the web, I guess I prefer to stick with the LM 723.

Maybe it is possible to take 2 identical circuits and transformer this into a dual bench top supply, however my knowledge doesn't extend to design unfortunately.

If you could help your assistance would be appreciated.

Aubunnz

Hi there,


Dont they have any reference designs on the data sheet?

What kind of current and voltage output are you looking for?

hi Aubunnz
Look at this 723 datasheet, you will have to dust off the cob webs, both positive & negative supplies.

LM 723 Dual Lab PSU

Hi,

Thank you for your reply. I have in the past made reference to the 723 datasheet but I must be honest I am no designer all my results are basically trial and error, I must say I have been successful this far. I build PSU for the sheer fun AND love of doing so. The last supply I built was a single rail supply capable of delivering variable voltages upto 30V and easily 30A when tested with a 2n3055 electronic load. I figured for a challenge to try something a little different this time a symmetrical PSU with tracking god forbid. Do you possibly have the expertise to point me in the right direction?

Regards

Aubunnz

ericgibbs said:

hi Aubunnz
Look at this 723 datasheet, you will have to dust off the cob webs, both positive & negative supplies.

Click to expand...

Hi Eric,

Thank you for your reply. I certainly will thank you for your assistance

Regards

Aubunnz