For the PCBs, or fully finished or tested ?
For the PCB, you need to :
1) be able to solder 0603 and SOT363
2) be prepared to match SOT23-5 and SOT363 dual transistors
3) have a collection of susumu 0603 resistors for DC trimming
And of course you need a reasonable size to match from.
So you should be doing it for love of DIY.
Patrick
For the PCB, you need to :
1) be able to solder 0603 and SOT363
2) be prepared to match SOT23-5 and SOT363 dual transistors
3) have a collection of susumu 0603 resistors for DC trimming
And of course you need a reasonable size to match from.
So you should be doing it for love of DIY.
Patrick
Patrick,
I'd LOVE to buy finished & tested. At least a pair so I could try out.
I'd also be happy with PCBs & matched sets of transistors. BUT that's better after trying out, so I know it's worth the DIY'ing.
Buying the parts and soldering those sizes is not an issue for me
Greg in Mississippi
I'd LOVE to buy finished & tested. At least a pair so I could try out.
I'd also be happy with PCBs & matched sets of transistors. BUT that's better after trying out, so I know it's worth the DIY'ing.
Buying the parts and soldering those sizes is not an issue for me
Greg in Mississippi
Patrick,
I know your work. I have used a couple of your ES9022 DAC boards and have a CEN/SEN kit on the workbench for a build to use with Ian Canada's ES9038Q2M RPi DAC board. ALWAYS GOOD, ALWAYS WELL THOUGHT OUT, ALWAYS A CLASS ACT.
I doubt I won't like them. Just want to try to see if I like them better than others.
AND I don't expect them to be cheaper than commercial ones at all. BUT I suspect they might be better. Again, I have some of your work... you can't do the small-job stuff as cheaply as a large batch after setup for production. AND when I DIY, is not cheaper either given my time... but I enjoy it and it helps keep me sane!
Later!
Greg
I know your work. I have used a couple of your ES9022 DAC boards and have a CEN/SEN kit on the workbench for a build to use with Ian Canada's ES9038Q2M RPi DAC board. ALWAYS GOOD, ALWAYS WELL THOUGHT OUT, ALWAYS A CLASS ACT.
I doubt I won't like them. Just want to try to see if I like them better than others.
AND I don't expect them to be cheaper than commercial ones at all. BUT I suspect they might be better. Again, I have some of your work... you can't do the small-job stuff as cheaply as a large batch after setup for production. AND when I DIY, is not cheaper either given my time... but I enjoy it and it helps keep me sane!
Later!
Greg
This thread is tempting me to try making a DIP8 adapter for my K2-X: GAP/R MODEL K2-X Socket for 12AX7 and 6AN8 Opamp | #141955721
though I suspect flashover might be an issue with those +/-300V rails, and it might be a tad top-heavy
though I suspect flashover might be an issue with those +/-300V rails, and it might be a tad top-heavy
There are discrete clones of AD797 or something same as it in forum (folded cascode topology).
Member tiefbassuebertr who collected them at here: AD797 discrete clone - comparison of seven variations
Walkalone,
Member tiefbassuebertr who collected them at here: AD797 discrete clone - comparison of seven variations
Walkalone,
Very true> Matching will be a challenge.
> but hey, that's part of the fun with diy, right?
Designing PCBs is also part of the fun.
I posted enough photos that you can use as reference.
Patrick
It's my version of sudoku or something like that, doing layouts relaxes me.
Less than a tenth actually get fabricated, but it gives me something to do when my back prevents from being more active.