Here some photos of the first power supply I built for the ER274A rectifier.
The owner of one of the sets of 211/211 amplifiers requested to convert the power supplies to use the new ELROG rectifier. How could I say no to that?
Two of the TV Dampers got replaced by the directly heated rectifiers. Two TV dampers remained for a slow ramp up of the high voltage.
Now not only the amplifier sections exhibit the bright thoriated tungsten glow, but the power supplies as well.
Not sure yet if I even prefer this to the blue glow of the mercury vapour PSUs.
Quite spectacular light show!
Amp section and PSU side by side:
The gap between the two plates gives a nice view to the filament.