It works well, but I made an error in my ripple measurements. There is a small amount of ripple of the type exhibited by fast switching rectifiers (spiky). It's less than 5mv p-p, however.
Completed PCB build up of new PS and made a couple changes along the way. R2 & R3 have been replaced by a single 56k resistor. Also, the value for the resistor R4 is 10K (had not established the value at time of posting). The turn on circuit had called for a 50K, but not having one I went with a 39K + 10K (49K). Today I managed to happen up on a 56K. Since the resistors make up the RC tank, a slightly larger resistor only slowed time a very slight bit. In case you're wondering why 2 10uF in parallel? That's what I had one hand that was smaller than 100uF, which took way too long to come up. The time for the 20uF to come up appealed to me at about 30 seconds.
On the pre-amp PCB, all components save for the last 2 capacitors on the power feed have been removed. I added a 10nF snubber to the new DC input which kills the HF noise from the Hi intensity blue LED (power indicator).
mwhouston wrote:
Les: What no smoke flow? Good work. I've not see the type of PS before.
I did that today.

Before putting the line voltage to the completed PCB, I was going through what I call "staging". Basically, I check the DC section using a DC lab supply. Then I do a low voltage section test off of the xformer secondary, using a LV AC source, then I'll "put the pedal to the metal" with the mains. Well, I managed to short out my LV AC source and blew its fuse. Not that there is a problem with the design, mind you. The problem was me

I let the clip leads get too close and **SPAT**, no LV AC, power indicator out - DANG! Blown fuse. The design is borrowed from the LM317T application notes with a little "personalization".
Pictures of the new PS:
Attachment:
top.jpg
Attachment:
bottom.jpg
As you may have noticed, there is yet no mains connected. Until I re-fuse my AC LV bench supply and complete AC stage test, it won't be tested on mains.