Lot 4 pcs 6n7s Foton Soviet tube
Radio tube 6N7S double triode - used to amplify low frequency voltage. Design - in a glass shell, with an octal base.
Main technical characteristics
Rated electrical data for each triode
Filament voltage 6.3 V
Anode voltage 300 V
Grid bias voltage -6 V
Voltage circuit current 810 ±50 mA
Current in the anode circuit with triodes connected in parallel 7 mA
The current in the anode circuit at the grid voltage is zero 17.5 mA
Slope characteristic with parallel connected triodes 3.2 ±0.5 mA / V
Internal resistance with parallel connected triodes 11.4 ±2.1 kOhm
Gain with parallel connected triodes 35 ±5
Output power 4.2 W
Maximum permissible electrical values (for each triode)
Highest filament voltage 7 V
Lowest filament voltage 5.7 V
The highest voltage at the anode is 300 V
Maximum power dissipated at the anode 6 W
The highest voltage between the cathode and the heater is 100 V
Weight 50 g