Lamps IV-25 of 81 and 82 years. Since they are a vintage product (more than 30 years from the date of issue) and factory storage was in large, wooden boxes where there was direct contact with the air, the legs have oxide in some places, but they are whole. In the photo you can see. At your request I will make an additional photo.
25 VFD Matrix nixie tubes clock NEW 81-82s 50 pcs. Also this product can be called: indicator iv.
IV indicator vacuum luminescent is designed for the formation of digits from 0 to 9 and a decimal place in the indicator devices. IW indicators are used in various devices for displaying sign information, computing devices and measuring devices. Product specifications vacuum indicator IV.
The brightness of one digital digit of the indicator is not less than 100 cd / m2. The filament voltage is not less than 0.8 ± 0.05 V. The filament current is not less than 45 ± 55 mA. The color of the glow for the products of the indicator lamp is green.
Vacuum-luminescent indicator is an electrovacuum triode of direct glow with a lot of phosphor-coated anodes. The work of vacuum luminescent indicators is based on the ability of some crystalline substances, called cathodoluminophors, to convert the kinetic energy of electrons to light.The vacuum fluorescent indicator is a triode with a positive control grid. The electrodes are enclosed in a cylindrical cylindrical cylinder, from which air is pumped out. Department of technical control - OTK.