SONG: Lindsey Stirling Phantom of the Opera Medley
   • Lindsey Stirling  Phantom of the Ope...   Check her out!!

SCHEMATIC: http://eeberfest.net/vid/IN13VUAGC.pdf

This is my latest project, a VU Meter (more like a Music Visualizer really, since it's not calibrated) that uses Russian IN13 neon bar graph tubes. IN13s are sometimes referred to as Nixie bar graphs since they use the same technology as actual Nixie tubes.

This is just a test setup to play with a drive circuit we've been kicking around on the tubeclockdb.com forum. Since it seems to work, I'll think up a case for it then remake the circuit on a PCB that will fit with my case concept.