Multidigit digital luminescent indicator ILTs9-4/7L. Reference data

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Multidigit digital luminescent indicator ILTs9-4/7L. Reference data

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Encyclopedia of radio electronics and electrical engineering / Reference materials

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The four-digit vacuum digital indicator ILC9-4/7L with increased brightness has a familiar area of 6x3 mm. The glow color is green.

The device is housed in a flattened glass container with flat stamped hard tinned leads (see figure).

Multi-digit digital luminescent indicator ILTs9-4/7L

The weight of the device is no more than 30 g. The indicator is designed for use in measuring equipment.

Device pinout: pin. 1 and 46 - cathode heating, internal conductive layer of the cylinder; vyv. 2, 3 and 4 - absent; vyv. 5 - anode element of category 4; vyv. 6 - anode element d. 4; vyv. 7 - anode element, size. 4; vyv. 8 - anode element e size. 4; vyv. 9 - anode element and section. 4 (decimal point); vyv. 10 - anode element d. 3; vyv. 11 - anode element, size. 3; vyv. 12 - anode element e section. 3; vyv. 13 - anode element and section. 3 (decimal point); vyv. 14 - anode element d. 2; vyv. 15 - anode element, size. 2; vyv. 16 - anode element e section. 2; vyv. 17 - element - anode and cut. 2 (decimal point); vyv. 18 - anode element d. 1; vyv. 19 - anode element, size. 1; vyv. 20 - anode element e size. 1; vyv. 21 and 22 - absent; vyv. 23 and 24 - cathode heating; vyv. 25 and 26 - absent; vyv. 27 - mesh; vyv. 28 - anode element in section. 1; vyv. 29 - anode element and section. 1; vyv. 30 - anode element b size. 1; vyv. 31 - anode element g raz. 1; vyv. 32 - anode element g raz. 2; vyv. 33 - anode element in section. 2; vyv. 34 - anode element and section. 2; vyv. 35 - anode element b size. 2; vyv. 36 - anode element g raz. 3; vyv. 37 - anode element in section. 3; vyv. 38 - anode element and slit. 3; vyv. 39 - anode element b size. 3; vyv. 40 - anode element in size. 4; vyv. 41 - anode element a raz. 4; vyv. 42 - anode element b size. 4; vyv. 43, 44 and 45 are missing.

Main Specifications

Glow intensity, cd/m2.....2000
Cathode heating voltage, V ..... 1,4 ... 1,8
Rated cathode glow current, mA.....100
Rated voltage on the anode element, V.....35
Rated grid voltage, V.....25
The total current of the anode elements of one category, mA, not more than ..... 15
Grid current, mA, no more, during the operation of one discharge ..... 6
Minimum time to failure, h.....25 000
Working range of ambient temperature, °С.....-60...+80

Author: A.Yushin, Moscow

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