Kerry

Thanks for the comments The board size is 5.9" wide and 6.25" deep. The heat sinks that mount to the sides of the board are from heatsinkusa. They're the low profile ones and are a half an inch thick. I'm leaving a .05" gap on either side of the board so the width will be exactly 7" with the sinks.

I used a larger capacity one for my Blue Hawaii and I've used this particular one in a guitar amp I built with no issues. The transformer here is a 100VA and it's the only thing running through the SSR. Power draw for the amp is about 28VA against the HV side of transformer not accounting for loss.

I finally got around to the power supply for my mini-kgst. I was able to get the +/-400V with delay, filaments, +/-15V and a +5V supply all on one board (5.9" x 6.25"). Here's what I came up with... Here's the 3D models from DipTrace. I did all of the non-standard 3D component models myself. I'm getting good at it. I ordered the wrong size caps for the HV supply . I'm going to put in another order and should have it up and running shortly. I redesigned the timer circuit because I'm using it with a solid state relay. There was a short ON burst in the older one that would turn on the relay for a small fraction of a second. This one keeps the output low until activation. I've been testing it for about a month and it seems to work well and is stable. It was a combination of reading the datasheet for the LM555, modeling some ideas in LTSpice and then testing on the bench. I'm usually careful, but made a mistake on placement of the charging capacitor. I had to move it, but got luck and it was a fairly simple surgery. I'm looking forward to getting the caps for the HV and testing it out the rest of the board. All in all I'm happy. Most parts are fairly accessible and it seems like I'll be able to get to them if need be. This board will mount under the top panel of the amp in the back. The transformer will sit on the top above the top panel directly above the supply. I'm using the Antek 100VA 350V transformer and steel case. More to come

Very nice build. Love the look.

Nice work as always! I was enjoying the white faceplate, but this has such a bad boy look

Nicely done

Nice:) Too many projects in front of this for me. Maybe around Christmas time.

The 10M90S on the top center is not centered properly. It's about 1/10th of an inch to the right. I haven't carefully checked the rest yet. Edit: never mind, just looked again and it looks good now.

Nicely done

Interesting:). That's what I was hoping you'd say. I may need to pull mine out and rewire as well.

I'm guessing that will change the sound signature. Kind of like Marshall vs Fender. Have you built one yet?

It would be nice to get Q32 on the main heat sink as well.

Oh crap! I'm feeling the need to build this. haven't looked closely yet, but you still have some transistors labeled with 2SC3675. were you thinking of doing this as one or four boards?

Nice build! Now just hang out and wait for the 009s. Enjoy:)

Nice. I like the single chassis approach.

Now that's DIY. Yeah, 1000v

Nice work!

I turn on my +/-15 supply before I turn up the HV and have had no issues. You should be fine to test the LV first. Don't do the reverse though.

Nicely done. It looks beautiful!

Very nice

Beautiful

I only gave him the attenuator boards. Not the multiamp. I had to do a lot of surgery on my multiamp boards to get them to match the current design.

Awesome. Now sit back and enjoy. Edit: This was directed at Headinclouds, not EruptionInProgress.

I've still got a few. Already in touch.

Nice! This one is on my list. Might take a bit to get there.