Figure A shows a 5U4/5Y3 type rectifier tube connected to a power transformer. Figure B shows a heater type full wave rectifier connected to a transformer. The filament in Figure A and the cathode in Figure B connect through a dashed line to the positive side of a filter capacitor. There is also a solid resistor connected from the filament/cathode to the first filter capacitor. The bottom end of the filter capacitor goes to the common and back to the center tap of the transformer high voltage winding. There is another resistor going on from the top of the filter capacitor. The other end of this resistor goes to the top of another filter capacitor. The bottom of this capacitor goes to the common. There is another series resistor, another capacitor to common, a fourth series resistor and a fourth capacitor to common.
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