PT choice and other pointers

[Pryde]

I am planning a very stripped-down 6G2 build (Fender brownface princeton) and am going to go with a solid-state rectifier instead of tube, no tremolo, single input, volume and tone only. (see doctored schematic). The B+ on the original schematic calls for 315vDC.

An equation I leaned to determine this is to divide the needed B+ by 0.707 to get secondary HV values: 315v/.707=445v

So the PT should be ~450vCT (225-0-225 @75m/a) yes:
https://www.hammfg.com/files/parts/pdf/269GX.pdf

If this one is ok I need to also tap the HV winding for bias and not sure how to determine values needed to get to the -35v per the original schematic. Just learning and gathering info for this project.
Thanks

[Gingertube]

I'm a little concerned that 225-0-225 will not get you 315V DC.
For guidance I checked a recent amp build and 285-0-285 gave me 360V.
I suggest you have a play with PSUD2 which is a power supply simulation program available free here:
PSUD2

Cheers,
Ian

[The Dude]

I wouldn't get horribly hung up on the voltages stated on that schematic. I've never run into a Princeton that had an actual plate voltage that low. Anything in the vicinity could be made to work. As far as the bias voltage, it will take some tweaking, regardless. If you're building from scratch, I would just make it adjustable.

[Pryde]

I wouldn't get horribly hung up on the voltages stated on that schematic. I've never run into a Princeton that had an actual plate voltage that low. Anything in the vicinity could be made to work. As far as the bias voltage, it will take some tweaking, regardless. If you're building from scratch, I would just make it adjustable.

Thanks. I did some digging and it seams everyone who has a 6G2 has a B+ above 360vDC so I am going to go with this PT which should get me in that range
https://www.hammfg.com/files/parts/pdf/270DAX.pdf

For the bias tap off the HT I found a layout that I think should work fine to get plenty of range to adjust. What do you think:

[The Dude]

Looks like a good start to me. It's easy enough to tweak some resistors values if necessary.