Why 6.3 volts?
Time to ponder a new question. Why did 6.3 volts seem to become the defacto standard for fillament voltage for so long ? Early radio tubes that needed 2.5 volts were run at 1.5 to 2.5 and we'll leave out series string for now. Was it a transformer thing like only takes one layer? Power? Na, power is the same we just jugle the volts/ amps.
Why 6.3? |
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 |
Zenith is correct. It's due to automobile radios. Or three cells in 'farm' radios.
|
All times are GMT -5. The time now is 09:30 AM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.