Highlights























Description

1x EXTRA RARE IV-13 / IV-19 VFD TUBE for CLOCK DIY (NEW, NOS, TESTED 100%)



IV-13

Glow indicator. Extremely rare.
Some labels could be slightly erased!

Vacuum miniature glow indicator.
Designed to form digits (0 .. .9) and a comma from separate luminous segments.
Lamp diameter 22 mm.
Lamp height 56 u200bu200bmm.
Digit height 23 mm.
The segment supply voltage is 6.3 V.
Segment current ..................................... 36 mA.
Durability not less than 5000 hours.
Weight no more than 17 g.

A vacuum incandescent indicator is an electric vacuum device with radiation elements located inside it in the form of incandescent filaments. The glowing indicator structurally consists of a cylindrical or rectangular glass cylinder, inside of which, on an insulated base, several independently controlled glowing filaments are suspended on supports. Twisted filaments with a spiral thickness of about 60 microns are made from a special tungsten alloy. They are in such a thermal mode of operation that ensures the absence of deformation for a long time. The mutual arrangement of the filaments makes it possible for the indicator to display various signs, letters or numbers in the indicator cylinder. Segments of tungsten filaments are made straight and fixed with support pins. One terminal from all filaments is made common, and the other is used for switching. Of all low-voltage devices for displaying information, vacuum incandescent indicators have the highest brightness, which allows them to be operated in any ambient light conditions, up to direct sunlight.

Produced seven-segment alphanumeric incandescent indicators of types IV-9, IV-13, IV-19, and IV-20 allow using control schemes to highlight, in addition to Arabic numerals from 0 to 9, some letters of the Russian alphabet: A, B, D, E, 3, H, O, P, P, S, Y, H and decimal point. Signal indicators of types IV-10 and IV-14 each have four controllable segments, which allows them to display the signs "+", "-", as well as the number 1. Indicators of types IV-9 and IV-10 (similar to IV-13 and IV-14) have the same dimensions of their cylinders, which makes it possible, using them in pairs, to display information that requires the location of the "+" or "-" signs in front of the numerical value. Ten segment displays of IV-19 and IV-20 types provide the ability to highlight the largest alphabet of displayed characters, including some letters of the Latin alphabet.

The performance of the indicators is ensured under the following climatic influences and mechanical loads:
Ambient illumination level, no more, lx ............... Not limited
Ambient temperature, u00b0 u0421 ........................... from -60 to +70
Cyclic temperature changes, u00b0 u0421 .................. from -60 to +70
Relative air humidity at a temperature of + 35 u00b0 u0421,% ....... 98
Mechanical loads with acceleration, g:
- linear 50
- vibration (in the frequency range 1-600 Hz). ... five
- drums:
----- multiple (with a shock duration of 2-10 ms) 40
----- single (with an impact duration of 1-3 ms). .150

The pins are always counted when viewing the device from below.

Made in USSR.
NEW, NOS TUBES, TESTED 100%

Terms of Sale

must be sent to Ukraine. I can guarantee you complete satisfaction with all my products. If you receive an item you ordered which is damaged or defective, I will send replacement item. I only accept s if the items you received are not what was described in the listing, damaged or defective. If is not possible money will be issued. Item for ing must have the original tags and packing, otherwise it won't be accepted.


Shipping

AIR DELIVERY usually takes 10 - 24 days WorldWide. Tracking number will be provided. Will be packed professionally.
Can write lower value on customs declaration on request.