30-05-2013, 07:29 AM
3.5V 200mA lamps are available and work fine.
If they are too dim for your liking you can up the shunt to 250Ω as this was the original value. Bush lowered it as it was found that if the set was switched off and on again quickly the current surge would blow the lamps.
- Joe
If they are too dim for your liking you can up the shunt to 250Ω as this was the original value. Bush lowered it as it was found that if the set was switched off and on again quickly the current surge would blow the lamps.
- Joe
