Video demonstration 

https://www.youtube.com/watch?v=E4hZlV-jX1c

Specifications

    Small-sized tube 8LO29I (8LO-29I, 8LO 29I, 8L029I, 8L0-29I, 8L0 29I)

    With a round screen, green glow with a short afterglow.

    For photographic registration of various physical processes.

    The diameter of the working part of the screen is not less than 70mm.

    Small tube 8LO29I with a round screen, green glow with a short afterglow. Small tubes 8LO29I are designed for photographic recording of various physical processes. The diameter of the working part of the screen is not less than 70mm. The width of the focused line in the center of the screen is not more than 0.55 m; at a point 3/8 of the diameter of the working part of the screen from the center of the screen, not more than 0.75 mm.

    Conclusions of electrodes: 1, 14 - heater; 2 - cathode; 3 - modulator; 5 - the first anode; 7 - signal deflection plate Y1; 8 - signal deflection plate Y2; 9 - the second anode; 10 - temporary deflecting plate X1; 11-time deflection plate X2; 4, 12 - connected. Design - glass with a socle. Weight 0.45kg.

    Main parameters of the device small-sized tube 8LO29I

    at Un = 6.3V; Ual = 280 ... 516V; Ua2 = 1.5 kV; U3an = - (22.5 ... 45) V;

Glow current, A

0.27

0.33

Cathode current, μA

 -

1000

The current of the first anode, μA

-50

300

Leakage current between cathode and heater, μA

 -

30

Leakage current in the modulator circuit, μA

 -

5

Leakage current in the circuit of the first anode, μA

 -

15

Sensitivity, mm / V:

temporary deflecting plates X1, X2

0.14

0.21

signal deflection plates Y1, Y2

0.19

0.29

Ready time, min

 -

2

Operating hours, h:

8LO29I

1000

Running time criteria:

width of the focused line in the center of the screen, mm

 -

0.7

spurious emission, cd / m2:

8LO29I

 -

0

Modulation, V

- 

40

Screen brightness:

8L029M μW / cm2 ∙ cf

0.4

 -

Capacities between electrodes, pF:

- 

10

plate X1 - plate X2

 -

3

plate Y1 - plate Y2

- 

4

plate Y1 - - all electrodes

 -

15

plate X1 - all electrodes

 -

12

plate Y1 - all electrodes except Y2

 -

13

plate X1 - all electrodes except X2

 -

8

plate Y2 - all electrodes except Y1

 -

12

plate X2 - all electrodes except X1

 -

8.3

    Ultimate performance data small-sized tube 8LO29I

 Filament voltage, V

5.7

6.9

The voltage of the first anode, μV

 -

1,1

The voltage of the second anode, μV

1,5

2.2

Modulator voltage, V

-125

0

Voltage between any of the plates and the second anode, V

-550

550

Resistance in the modulator circuit, MΩ

- 

1,5

Impedance in the circuit of any of the deflectors

plates at a frequency of 50Hz, megohms

 -

1