Double triode with indirect incandescence - 6H9C is designed to work in pre-amplifiers of low-frequency signals, in phase inverter circuits, in the cascades of various measuring equipment. The radio lamp provides voltage amplification without additional distortion. Foreign analogues - 6SU7, 6113, 6SL7GT most accurately meet the required parameters and properties of the triode 6H9C. The radio lamp has a glass body, which is mounted on the octal base.
• Operating voltage at each of the anodes: 250 V.
• Current in the circuit of each of the anodes: 2.3 mA.
• Gain of each device (triode): 70.
• Shear voltage on the first (control) grid: - 2 V.
• Required voltage for incandescence: 6.3 V.
• Average current in the incandescent circuit: 0.3 A.