The 3CX10000A7 is a metal ceramic, forced air cooled triode with a thoriated tungsten carbide cathode. The operating frequency is 160MHz, the anode and grid dissipation powers are 10kw and 500w. It is mainly used in audio or radio frequency equipment as a zero grid bias class B amplifier. Since the bias power supply is eliminated, the tube works under zero grid bias, which simplifies the circuit. When the grid is grounded, the tube can obtain a gain of 20 times.
Specifications:
Filament Voltage……7.5V
Filament Current……99A
Amplification Factor……200
Interelectrode Capacitances (Grounded cathode)
Input……59pF Feedback……0.23pF Output……36Pf
Mounting……Upright, anode up or down
Cooling……forced air for core column and anode
Weight……5.5kg
Temperature at anode shell and seals……250℃
Maximum ratings:
DC Anode Voltage……8kV
DC Anode Current……5A
Anode Dissipation……10kw
Grid Dissipation……500W
Typical conditions
(grid-grounded class B RF linear amplifier)
DC Anode Voltage……7000v
Zero Signal Anode Current……0.6A
Signal Anode Current……5A
Signal Grid Current……1A
