GU-5B GU5B RUSSIAN POWER TRIODE VACUUM TUBE 3.5 KW

GU-5B GU5B RUSSIAN POWER TRIODE VACUUM TUBE 3.5 KW (ORIGINAL NEW) The GU-5B is a powerful generator triode in glass-to-metal design with a directly heated tungsten thoriated carbide cathode and forced air cooling. Designed to generate and amplify high-frequency oscillations at frequencies up to 110 MHz with an output power of at least 3.5 kW. Used for operation in radio transmitting devices and in industrial high-frequency heating installations. Working position – vertical, anode down. Forced air cooling: – anode – not less than 400 m3/h; – cylinder – not less than 40 m3/h. Technical specifications: (at Un=12 V, Ua=3 kV, Ia=0.4 A) Filament Voltage: 12,6 V Filament current: 20-27 A Mutual conductance (at anode voltage 3 kV, anode currents 0.4 and 0.7 A): 12-18 mA/V Gain coefficient ( at Ia=0.5 A, Ua=2 and 4 kV): 60-85 (72.5 ± 12.5) Grid current reverse: no more than 20 μA Cathode emission current: (at Uа=Uс=500 V) at least 6 A Ionic anode current: (at Ua=500 V) no more than 40 μA Anode current: (at Uс=0 V) 0.55±10A Slope: 15 ± 3 mA/V Interelectrode capacitance. pF: input, at most :19 - output. at most: 0.5, transfer. at most: 16 Output power: (at 25 MHz) not less than 3.5 kW Weight: 2.500 kg - Original FOAM BOX - FREE PACKING Kayu + Bubble Wrap