More PCB fun 🙂
Little board to hold all the small tidbits for the 6E6P. These little high-gm shits are prone to all sorts of oscillation nasty-ness. So, instead of burning my fingers trying to solder those tiny MKP caps and ferrite beads onto the noval sockets, I am just making PCBs for the tubes I have here, starting with the 6E6P.
I might make a series for the 5842, Da3, 437A, EC8010, 6Z49P, 6S4P, 6S45P
* means a ferrite bead on that socket pin or added to that side of the resistor lead. That should cover all pins with a bead except for the shield pin.
this is what is on board
Another PCB that I am still working on is for a few raw DC supplies. Mainly intended for small indirectly heated tubes like the above 6E6P, but it could also be used for low current Directly Heated tubes like in my intended 4P1L headphone amp. A 12V/36VA pcb transformer, four SiC diodes followed by C-R-C-L*-C filter.
The resistor is just to burn off excess voltage to lower the heat on any regulator I end up placing in the signal chassis, so it will be in the 1-5 ohm range. The choke is common mode 10mH/5A, so just for noise, not ripple. Two 4700µF/35V BY caps for high current/ripple, then 2x 10.000µF/35V FW.
Might add a fuse at the output, I see I forgot to add one.
The heatsinks are not really needed in most cases, but they just look cool. Just like the purple PCB. Green is soooo last week.
Hah, and I discovered the ground-plane checkbox 😀
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