Hey folks.
Been searching far and wide for some sort of universal PCB to be able to experiment with different valve pre/power-amp configurations. I was considering making my own, but then I chanced upon the Valve Wizard PCBs. Sadly, though, it seems they're out of print -- And barring them, there really doesn't seem to be any other options that are quite as thoughtfully laid out.
Anyone know if he ever released the schematics for these, or if he sells them through some other vendor? Alternatively, if he doesn't intend to make any more and it might be ok if one reverse engineers them with the help of someone who has 'em?
Otherwise, I suppose I'll simply have to make my own layout.
Been searching far and wide for some sort of universal PCB to be able to experiment with different valve pre/power-amp configurations. I was considering making my own, but then I chanced upon the Valve Wizard PCBs. Sadly, though, it seems they're out of print -- And barring them, there really doesn't seem to be any other options that are quite as thoughtfully laid out.
Anyone know if he ever released the schematics for these, or if he sells them through some other vendor? Alternatively, if he doesn't intend to make any more and it might be ok if one reverse engineers them with the help of someone who has 'em?
Otherwise, I suppose I'll simply have to make my own layout.
I stopped selling them. There were several different types so I wasn't really intending to release all the gerbers, but if you were interested in particular ones I could possibly make those available.
Some options here. I have had good service from this company in the past. You might need to translate from Polish. I bought some of their prototype boards.
PW-001 Universal Amplifier
PW-001 Universal Amplifier
The man himself! First off -- thank you for all the knowledge, absolutely invaluable.
I'm primarily interested in the Input and EL84 output boards, but the more the merrier. If you throw me your paypal I could naturally send you a couple quid for the hassle.
And yeah, might be worth publishing the gerbers to your webpage for a minor sum, with the increasing availability of diy pcb manufacturing I'm certain people would take you up on the offer. I would!
I aggree with JMartell. Not only the gerbers but the KiCad files would be of value as starting points for unskilled persons like myself.
OK I have made the Gerbers available at the bottom of the page: http://valvewizard.co.uk/oppcb.html
I don't use KiCad, sorry!
I don't use KiCad, sorry!
Woah. That's very kind of you. Bless your heart!
I feel ashamed to ask -- but will any of the others be made available as well? If nothing else, the input stage and/or powersupply pcb would be really rather useful. Should you be too busy for that, I understand.
I feel ashamed to ask -- but will any of the others be made available as well? If nothing else, the input stage and/or powersupply pcb would be really rather useful. Should you be too busy for that, I understand.
Another big thank you from me. I’ve very much enjoyed reading the website and the preamp book. Any chance of the EF86 input stage Gerber? Thanks again for all your hard work.
As a complete novice at valves and valve circuit understanding I found your articles invaluable, well and clearly written. So, thank you.
+1 for the praise for a great website.
I'm a proud owner of Merlin's 3 books. I have asked a few times by email if the PCB's will be available again. Also the universal PCB referred by Rob Robinette, the one with the circulair layout? The mails might have been snagged by spam filters....
Love your books. Big thank you...
Love your books. Big thank you...
@Merlinb, would you mind putting the B9A development board gerbers up for download as well? Those would be really handy to have. I'd be glad to send you payment if you'd prefer to not open source those - they're just not possible to get since you've stopped selling them without recreating that PCB layout.