I'm working on an early 400 that has the fuse style incandescent lamps. I bought blue and warm white fuse style LEDs. The light winding on the transformer is only 6.7 VAC with a line voltage at 120 and the 8 volt LEDs were dim. I considered adding a few turns to the light winding on the transformer to bump up the voltage. However there was not enough room in the window. I ended up with a voltage doubler circuit with a couple diodes and 2 x 220uf caps. I tried a few other options including using the +DC power supply with zeners and current limiting resistors but there was too much heat dissipation. The final circuit was hacked up on a recycled terminal strip out of the junk box.
So what's the opinion on the LED's? Warm white or cool blue?
So what's the opinion on the LED's? Warm white or cool blue?
Attachments
-
1.9 MB Views: 19
-
1.9 MB Views: 19
-
1.9 MB Views: 17