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This power supply is very similar to the power supply in AA5 (All American 5) radios. The 35W4 is a half-wave rectifier providing half-wave DC, the transformer is only for filament power. The 30 ohm resistor limits the current and the capacitors are for filtering. The 4.7K is a load resistor, which loads down the power supply to about 145VDC and also discharges the filter capacitor when the power supply is not in use. The neon indicator (Ne2) lights up when the power supply is on.
WARNING: This power supply is NOT isolated, thus the output can be HOT. For safety purposes, an isolation transformer is recommended.
Below is a picture of the power supply:
