GI-8 ГИ-8 soviet Vintage Vacuum Pentode Valve Rare Tube 1960s!

Technical characteristics of GI-8:
The filament voltage is 12.6 V.
Pumping current - not more than 10.5 A.
Input capacitance between electrodes - from 25 pF to 35 pF.
Output inter-electrode capacitance - from 20 pF to 30 pF.
The interelectrode capacitance between the second and first grid is not more than 0.1 pF.
The highest filament voltage of the GI-8 is 13.4 V.
The lowest filament voltage is 11.85 V.
The cathode emission current in a pulse at a voltage at all electrodes of 1000 V, pulse duration from 8 µs to 10 µs and parcel frequency of 50 Hz - not less than 4 A.
The voltage at the anode in the pulse is 5 kV.
Voltage on the second grid of GI-8 - 900 V
Steepness of GI-8 characteristic - from 4,5 mA/V to 6,5 mA/V.
Permeability of the first grid relative to the second grid at anode current of 200 mA, voltage on the second grid of 600 V and 500 V and voltage on the anode of 1 kV is 31.5%.
The output power in a pulse at a pulse duration of 25 µs and a parcel frequency of 19 Hz is 3.5 kW.
The highest voltage at the anode of the GI-8 lamp in a pulse is 8 kV.
The highest voltage on the second grid is 1.2 kV.
The highest negative voltage on the first grid is (-600) V.
The highest power dissipated on the anode for a long time - 200 W.
The highest power dissipated on the anode for no more than 3 minutes - 300 W.
The highest power dissipated on the second grid is 50 W.
The highest power dissipated on the first grid - 10 W.
Basic failure rate - 2.1-10-6 1/h.
Minimum operating time per failure - 1500 h.
Shelf life - 12 years.
Plinth - special 6-pin.
Overall dimensions:
- length - 285 mm;
- diameter - 110 mm.

Lot for 1 pc (1 tube)

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4. The usual time for a parcel to arrive at its address is 24 business  days, but usually it arrives much earlier. Sometimes it can take longer up to 8 weeks.

5. We can send to USA by UPS (3-4 business days delivery) $29 - 1.1lbs, $34 - 2.2lbs, $39 - 3.3lbs, $44 - 4.4lbs, $54 - 6.6lbs 


Delivery time lasts approx.

1) United States 12-24 business days.

2) Europe: up to 21-24 (except Germany and Italy, delivery time can take up to 1 month)

3) Other countries: not more than 30 business days.

4) Canada & Asia & Australia: the delivery can take up to 2 months, but  usually it arrives much earlier.

 

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