NOTE that 13th (!) power. Doubling brightness only requires a small voltage increase, but it causes the lifespan to be roughly 9% due to this law.
Hams have known about this for decades, where is it common to run 14V or 12V lamps on 6.3 volts for dial / panel illumination. I have a Drake 2-B receiver that uses this technique, and I have yet to replace the 2 bulbs that light up the frequency dial.
Hams have known about this for decades, where is it common to run 14V or 12V lamps on 6.3 volts for dial / panel illumination. I have a Drake 2-B receiver that uses this technique, and I have yet to replace the 2 bulbs that light up the frequency dial.