2 layers239.3 × 78.3 mm

OSDEHA PSU
mbrennwa/OSDEHA
Amplifier for electrostatic headphones using directly heated triodes in the output stage
114 parts2CERN-OHL-S-2.0
Boards in 1 GitHub repository, designed in KiCad, that use the ZY180 by DIOTEC (-50℃~+150℃ 1 Independent 168V~191V 180V 1uA@90V 2W ±5% DO-41 Zener Diodes ROHS). See how each wires it, with its parts, size, README and files; the ZY180’s symbol, footprint and pinout are on its own page.

mbrennwa/OSDEHA
Amplifier for electrostatic headphones using directly heated triodes in the output stage