30-08-2024, 02:41 PM
Valve life is about halved at 7V.
7V lamps doubles lamp life approx vs a 6.3V part. Torch bulbs are different to panel lamps as the life isn't an issue, so a 6V battery torch might use a 4.5V lamp, which is run at higher efficiency, bluer colour temp, but about 1/10th running hours of a panel lamp.
It's why real panel lamps look much more orange than real torch bulbs. Car bulbs are actually 14V., so a 6V (really 7V) motor cycle or old scooter lamp lasts much longer than a torch bulb in a radio as vehicle lamps are lower colour temperature than hand torch bulbs and designed to last much longer.
7V lamps doubles lamp life approx vs a 6.3V part. Torch bulbs are different to panel lamps as the life isn't an issue, so a 6V battery torch might use a 4.5V lamp, which is run at higher efficiency, bluer colour temp, but about 1/10th running hours of a panel lamp.
It's why real panel lamps look much more orange than real torch bulbs. Car bulbs are actually 14V., so a 6V (really 7V) motor cycle or old scooter lamp lasts much longer than a torch bulb in a radio as vehicle lamps are lower colour temperature than hand torch bulbs and designed to last much longer.
