ΠΙΣΩ
829A
Twin Beam Power Tube
Application
Heater-cathode type having midtapped heater used in af power amplifier and modulator and as rf power amplifier and oscillator. Plate dissipation is per section.Requires septar seven-contact socket and may be operated in vertical position with base up or down, or in horizontal position with pind 2 and 6 in horizontal plane.
Mechanical Data
EIA Base
...................................... 7BP
Electrical Data
Heater
Voltage ................................ 6.3/12.6 V
Heater Current ................................ 2.25/1.125 A
Direct Interelectrode Capacitances (approx)
Each Pentode
Input
......................................... 14.4 pf
Output
........................................ 7 pf
Grid to Plate
................................. 0.1 pf
Maximum Ratings (Design Center Values)
Each Pentode
Plate Voltage
................................. 750 V
Grid No. 2 Voltage
............................ 240 V
Plate Dissipation
............................. 40 W
Grid No. 2 Dissipation
........................ 7 W
Characteristics and Typical Operation
Class C Amplifier
Plate Voltage
................................. 750 V
Grid No. 2 Voltage
............................ 200 V
Grid No. 1 Voltage
............................ -55 V
Grid No. 1 Current
............................ 12 mA
Plate Current
................................. 160 mA
Grid No. 2 Current .............
.............. 30 mA
Driving Power ................................. 0.8
W
Power Output (approx) ......................... 87 W
Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage
............................ 200 V
Grid No. 1 Voltage
............................ -70 V
Grid No. 1 Current
............................ 12 mA
Plate Current
................................. 150 mA
Grid No. 2 Current .............
.............. 30 mA
Driving Power ................................. 0.9
W
Power Output (approx) ......................... 70 W
Class C Modulated Amplifier (Grid)
Plate Voltage
................................. 750 V
Grid No. 2 Voltage
............................ 200 V
Grid No. 1 Voltage
............................ -55 V
Grid No. 1 Current
............................ 0 mA
Plate Current
................................. 8 mA
Grid No. 2 Current .............
.............. 5 mA
Driving Power ................................. 0.7
W
Power Output (approx) ......................... 24 W
