As a hobbyist I glean as much info as I can find, I'm much more proficient at putting circuits together than working out the maths. With the maths I scrape by just. Thank you for the info you've all posted, much appreciated. I've got reams of data sheets, circuit schematics stored for references and such. The lm723 is the one I've not done yet, although I have collected a few variants of schematics from good sources. I'm mainly interested in power electronics, AC and DC motor control, and some relay stuff. Short story...
A friend asked me to repair a clay pigeon machine some years ago. It's wiring was a mess, it needed stripping right out and rewiring. I was going to see if I could work some of the 5 motors circuits out, that was before another friend tore out the wiring with side cutters whilst I went to get the tea. Started from scratch, took me two weeks to rebuild it. The owner then as me to adapt it to RC control for remote firing. Gained a few free trips to the range with my Daughter as a thanks for repairing it.
Very interested in anything power electronics. I'd like to attempt a smps in the near future, but will tackle the lm723 circuit first. Thanks again for the help and information you've all posted.
