In 1973 I re-enlisted in the Marines to go to "data systems technician school". The UNIVAC CP808 we trained on (and the ones I saw at different installations) had diode vacuum tubes as rectifiers in the power supply. The modem between the CPU and HF radio was the size of a refrigerator.
In 1973 I re-enlisted in the Marines to go to "data systems technician school". The UNIVAC CP808 we trained on (and the ones I saw at different installations) had diode vacuum tubes as rectifiers in the power supply. The modem between the CPU and HF radio was the size of a refrigerator.
The power supply for the 808 was designed to provide the DC necessary for the unit from the incoming 3-phase power systems. It was a special unit designed to fit the specialty MTDS shelter.
Vacuum diodes were probably the best way to do that at the time.
The power supply for the 808 was designed to provide the DC necessary for the unit from the incoming 3-phase power systems. It was a special unit designed to fit the specialty MTDS shelter.
Vacuum diodes were probably the best way to do that at the time.
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