Post war 120volts to 12/24 power supply.

[BCA]

My July 1953 Operator's Handbook says the CPP-2 (95 pounds) uses a power transformer followed by 2 metallic rectifiers and smoothing circuits (capacitor choke filter). This produces 2 separate 12 volt, 11 amp power supplies that may be connected by a switch in parallel to give 22 amps @ 12 volts or in series to give 11 amps @ 24 volts. The CCP-5 (129 pounds!) is similar in output but requires a 25 cycle input instead of 60 cycle input. 25 cycle was in common use before the introduction of 60 cycle (Mhtz) power in Canada. (? Late 1940's?).
They are a very useful bench power supply for 12 or 24 volts, although heavy to move around. ... Brian