Thread: Why 6.3 volts?
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Old 05-01-2013, 06:16 PM
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Zenith6S321 Zenith6S321 is offline
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Seems like a coincidence that a car battery of the time was 6.3VDC. So maybe the choice of 6.3V was to enable the use of lead acid batteries for powering the filaments?

Dave
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