Powered by batteries, the driver tube enables the multi-G constant-boost spaceships seen throughout the series.
2.
At the series'opening there is one major addition to mid-20th century technology called the " driver tube ".
3.
It has currently found a use as a driver tube in hi-fi tube amplifiers ( such as Audio Research models VS55 and VS110 ) because of its excellent low distortion and low noise characteristics.
4.
It was developed to eliminate the need for a driver tube in radios, and has rather more gain than is usual in a power pentode, producing full output from a relatively small drive signal ( the EL84 requires less than 4.4V rms for 5.7W output compared with 9V rms for 5.5W from a 6V6 or 8.7V rms for 11W from an EL34 ).
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