|Soviet IV-15 VFD Display
|Written by AnubisTTP on 2010-01-28
The IV-15 is the Soviet analog of the popular 6977 / DM160 miniature tuning indicator tube. Like the 6977, the IV-15 does not have a variable length display; only the brightness can be changed. These tubes will illuminate nicely at 9VDC; filament voltage is 1.2VDC. Although the 25mm envelope height of the IV-15 is identical to that of the the 6977, the IV-15 has a substantially larger diameter. Nonetheless, it is still a very tiny device.
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Soviet IV-15 vacuum fluorescent display, normal operation.