The Tektronix Type 210 is a high-voltage power supply used in the 513 scope.
Entry in 1950 Catalog
Schematic of 210 in Type 513.
Tek 210B Internal Circuitry
Tek 210B Internal Circuitry
Tek 210B Internal Circuitry
Tek 210B Internal Circuitry
Tek 210B Internal Circuitry
Tek 210B Internal Circuitry