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829B
Twin Beam Power Tube

EIA Base & Outline

EIA Base: 7BPEIA Bulb: 829
Source ........................................ RCA TT-5 - 1962

Application

Heater-cathode type having midtapped heater used in af power amplifier and modulator and as rf power amplifier and oscillator.

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

Bulb .......................................... Large Door Knob -T-16
Base Type ..................................... Medium moulded-Flare Septar 7-Pin (JEDEC 7-2)
EIA Outline ................................... 829
Maximum Overall Height ........................ 4.125 In.
Maximum Seated Height ......................... 3.68 In.
Maximum Diameter .............................. 2.375 In.
EIA Base ...................................... 7BP
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 2.25/1.125 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 100 V
Heater Negative with Respect to Cathode
DC Component ............................ 100 V

Direct Interelectrode Capacitances (approx)

Each Pentode
Input ......................................... 14.5 pf
Output ........................................ 7.0 pf
Grid to Plate ................................. 0.12 pf

Maximum Ratings (Design Center Values)

AF Power Amplifier & Modulator - Class AB1 (CCS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 225 V
Plate Input ................................... 100 W
Plate Dissipation ............................. 30 W
Grid No. 2 Dissipation ........................ 7 W
Bulb Temperature (At Hottest Point) ........... 235 °C

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (CCS) (Natural Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 225 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 67.5 W
Plate Dissipation ............................. 21 W
Grid No. 2 Dissipation ........................ 7 W
Plate Current ................................. 212 mA
Grid Current .................................. 15 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (ICAS) (Natural Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 225 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 90 W
Plate Dissipation ............................. 28 W
Grid No. 2 Dissipation ........................ 7 W
Plate Current ................................. 212 mA
Grid Current .................................. 15 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (CCS) (Forced-Air Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 225 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 90 W
Plate Dissipation ............................. 28 W
Grid No. 2 Dissipation ........................ 7 W
Plate Current ................................. 212 mA
Grid Current .................................. 15 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (ICAS) (Forced-Air Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 120 W
Plate Dissipation ............................. 40 W
Grid No. 2 Dissipation ........................ 8 W
Plate Current ................................. 240 mA
Grid Current .................................. 20 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (CCS) (Natural Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 225 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 90 W
Plate Dissipation ............................. 30 W
Grid No. 2 Dissipation ........................ 7 W
Plate Current ................................. 240 mA
Grid Current .................................. 15 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (ICAS) (Natural Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 225 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 120 W
Plate Dissipation ............................. 40 W
Grid No. 2 Dissipation ........................ 7 W
Plate Current ................................. 240 mA
Grid Current .................................. 15 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (CCS) (Forced-Air Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 225 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 120 W
Plate Dissipation ............................. 40 W
Grid No. 2 Dissipation ........................ 7 W
Plate Current ................................. 240 mA
Grid Current .................................. 15 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (ICAS) (Forced-Air Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 250 V
Negative Grid No. 1 Voltage ................... 175 V
Plate Input ................................... 150 W
Plate Dissipation ............................. 45 W
Grid No. 2 Dissipation ........................ 8 W
Plate Current ................................. 240 mA
Grid Current .................................. 20 mA
Bulb Temperature (At Hottest Point) ........... 235 °C

Characteristics and Typical Operation

AF Power Amplifier & Modulator - Class AB1 (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -18 V
Peak Grid No. 1 Voltage........................ 36 V
Grid No. 1 Current ............................ 0 mA
Plate Current (Zero Signal) ................... 40 mA
Plate Current (Maximum Signal) ................ 110 mA
Grid No. 2 Current (Zero Signal) .............. 6 mA
Grid No. 2 Current (Maximum Signal) ........... 26 mA
Driving Power ................................. 0 W
Load Resistance ............................... 13.75K Ω
Power Output (approx) ......................... 44 W
Maximum Frequency ............................. 200 MHz

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (CCS) (Natural Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 190 V
Grid No. 2 Dropping Resistor .................. 32K Ω
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 15K Ω
Peak Grid No. 1 Voltage........................ 138 V
Grid No. 1 Current ............................ 4 mA
Plate Current ................................. 112 mA
Grid No. 2 Current ............................ 13 mA
Driving Power ................................. 0.3 W
Power Output (approx) ......................... 50 W
Maximum Frequency ............................. 200 MHz

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (ICAS) (Natural Cooling)
Plate Voltage ................................. 425 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 11K Ω
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 43K Ω
Peak Grid No. 1 Voltage........................ 160 V
Grid No. 1 Current ............................ 14 mA
Plate Current ................................. 212 mA
Grid No. 2 Current ............................ 21 mA
Driving Power ................................. 1.0 W
Power Output (approx) ......................... 63 W
Maximum Frequency ............................. 200 MHz

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (ICAS) (Natural Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 25K Ω
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 8.6K Ω
Peak Grid No. 1 Voltage........................ 144 V
Grid No. 1 Current ............................ 7 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 16 mA
Driving Power ................................. 0.5 W
Power Output (approx) ......................... 70 W
Maximum Frequency ............................. 200 MHz

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (CCS) (Forced-Air Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 25K Ω
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 8.6K Ω
Peak Grid No. 1 Voltage........................ 144 V
Grid No. 1 Current ............................ 7 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 16 mA
Driving Power ................................. 0.5 W
Power Output (approx) ......................... 70 W
Maximum Frequency ............................. 200 MHz

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (CCS) (Forced-Air Cooling)
Plate Voltage ................................. 425 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 11K Ω
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 4.3K Ω
Peak Grid No. 1 Voltage........................ 160 V
Grid No. 1 Current ............................ 14 mA
Plate Current ................................. 212 mA
Grid No. 2 Current ............................ 21 mA
Driving Power ................................. 1.0 W
Power Output (approx) ......................... 63 W
Maximum Frequency ............................. 200 MHz

Plate-Modulated Push-Pull RF Power Amplifier - Class C Telephony (ICAS) (Forced-Air Cooling)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 20K Ω
Grid No. 1 Voltage ............................ -70 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 5.4K Ω
Peak Grid No. 1 Voltage........................ 180 V
Grid No. 1 Current ............................ 13 mA
Plate Current ................................. 200 mA
Grid No. 2 Current ............................ 20 mA
Driving Power ................................. 1.1 W
Power Output (approx) ......................... 90 W
Maximum Frequency ............................. 200 MHz

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (CCS) (Natural Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 190 V
Grid No. 2 Dropping Resistor .................. 40K Ω
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 12.5K Ω
Cathode Bias Resistor ...................... 360 Ω
Peak Grid No. 1 Voltage........................ 116 V
Grid No. 1 Current ............................ 4 mA
Plate Current ................................. 120 mA
Grid No. 2 Current ............................ 14 mA
Driving Power ................................. 0.3 W
Power Output (approx) ......................... 70 W
Maximum Frequency ............................. 200 MHz

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (ICAS) (Natural Cooling)
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 13K Ω
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 3K Ω
Cathode Bias Resistor ...................... 170 Ω
Peak Grid No. 1 Voltage........................ 128 V
Grid No. 1 Current ............................ 15 mA
Plate Current ................................. 230 mA
Grid No. 2 Current ............................ 23 mA
Driving Power ................................. 0.9 W
Power Output (approx) ......................... 83 W
Maximum Frequency ............................. 200 MHz

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (ICAS) (Natural Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 32K Ω
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 7.2K Ω
Cathode Bias Resistor ...................... 270 Ω
Peak Grid No. 1 Voltage........................ 124 V
Grid No. 1 Current ............................ 7 mA
Plate Current ................................. 160 mA
Grid No. 2 Current ............................ 17 mA
Driving Power ................................. 0.4 W
Power Output (approx) ......................... 90 W
Maximum Frequency ............................. 200 MHz

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (CCS) (Forced-Air Cooling)
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 13K Ω
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 3K Ω
Cathode Bias Resistor ...................... 170 Ω
Peak Grid No. 1 Voltage........................ 128 V
Grid No. 1 Current ............................ 15 mA
Plate Current ................................. 230 mA
Grid No. 2 Current ............................ 23 mA
Driving Power ................................. 0.9 W
Power Output (approx) ......................... 83 W
Maximum Frequency ............................. 200 MHz

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (CCS) (Forced-Air Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 32K Ω
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 7.2K Ω
Cathode Bias Resistor ...................... 270 Ω
Peak Grid No. 1 Voltage........................ 124 V
Grid No. 1 Current ............................ 7 mA
Plate Current ................................. 160 mA
Grid No. 2 Current ............................ 17 mA
Driving Power ................................. 0.4 W
Power Output (approx) ......................... 90 W
Maximum Frequency ............................. 200 MHz

Push-Pull RF Power Amplifier & Oscillator - Class C Telegraphy (ICAS) (Forced-Air Cooling)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 27.5K Ω
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 4.2K Ω
Cathode Bias Resistor ...................... 200 Ω
Peak Grid No. 1 Voltage........................ 134 V
Grid No. 1 Current ............................ 12 mA
Plate Current ................................. 200 mA
Grid No. 2 Current ............................ 20 mA
Driving Power ................................. 0.8 W
Power Output (approx) ......................... 115 W
Maximum Frequency ............................. 200 MHz

Class B Amplifier
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -18 V
Peak Grid No. 1 Voltage........................ 56 V
Plate Current (Zero Signal) ................... 27 mA
Plate Current (Maximum Signal) ................ 230 mA
Driving Power ................................. 0.39 W
Load Resistance ............................... 4.8K Ω
Power Output (approx) ......................... 76 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 ................................. 80 mA
Grid No. 2 Current ............................ 5 mA
Driving Power ................................. 0.7 W
Power Output (approx) ......................... 24 W

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Tue, 24 May 2022 02:28:33 -0700