TUBE: 829B
FICHIER SOURCE: sheets/049/8/829B.pdf
FABRICANT: RCA (Radio Corporation of America), Electron Tube Division, Harrison N.J.
ANNEE: 7-63 (juillet 1963)
TYPE DECLARE: Twin Beam Power Tube (double tétrode à faisceaux dirigés)

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829B — Twin Beam Power Tube — GENERAL DATA
Electrical:
Heater, for Unipotential Cathode:
  Heater Arrangement:           Series    Parallel
  Voltage (AC or DC) ........ 12.6 ± 10%  6.3 ± 10%  volts
  Current .................... 1.125      2.250      amp
Transconductance (Each unit):
  for dc plate volts = 250, dc grid-No.2 volts = 175, dc plate ma. = 60 ....... 8500 µmhos
Mu-Factor, Grid-No.2 to Grid-No.1 (Each unit):
  for dc plate volts & dc grid-No.2 volts = 225, dc plate ma. = 60 ........ 9
Direct Interelectrode Capacitances (Each unit):
  Grid-No.1 to plate* ............................ 0.12 max. pf
  Grid-No.1 to cathode & grid-No.3, grid-No.2, and heater ... 14.5 pf  (entrée)
  Plate to cathode & grid-No.3, grid-No.2, and heater ....... 7.0 pf  (sortie)
  Grid-No.2-to-Cathode Capacitance including internal grid-No.2 bypass capacitor (Approx.) .... 65 pf
Mechanical:
  Operating Position ...... Vertical, base up or down; Horizontal, plane of each plate vertical
  Overall Length ........... 4-1/8" ± 3/16"
  Seated Length ............ 3-11/16" ± 3/16"
  Maximum Diameter ......... 2-3/8"
  Bulb ..................... T16
  Bulb Terminals ........... See Dimensional Outline
  Base ..................... Medium Molded-Flare Septar 7-Pin (JEDEC No.7-2)
  Basing Designation for BOTTOM VIEW ... 7BP
Pinout (Bottom view):
  Pin 1 = Heater
  Pin 2 = Grid-No.1 of Unit No.2
  Pin 3 = Grid-No.2
  Pin 4 = Cathode, Grid-No.3
  Pin 5 = Heater Center-Tap
  Pin 6 = Grid-No.1 of Unit No.1
  Pin 7 = Heater
  Pu1 = Plate of Unit No.1 (top)
  Pu2 = Plate of Unit No.2 (top)
AF POWER AMPLIFIER & MODULATOR - Class AB1 (values on a per-tube basis)
Maximum CCS Ratings, Absolute-Maximum Values:
  DC PLATE VOLTAGE ......... 750 max. volts

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829B (continued)
  DC GRID-No.2 VOLTAGE ......... 225 max. volts
  MAX.-SIGNAL DC PLATE CURRENT .. 250 max. ma
  MAX.-SIGNAL PLATE INPUT ....... 100 max. watts
  MAX.-SIGNAL GRID-No.2 INPUT ... 7 max. watts
  PLATE DISSIPATION ............. 30 max. watts
  PEAK HEATER-CATHODE VOLTAGE:
    Heater negative w.r.t. cathode .. 100 max. volts
    Heater positive w.r.t. cathode .. 100 max. volts
  BULB TEMPERATURE (hottest point) .. 235 max. °C
Typical Operation (Class AB1, AF):
  DC Plate Voltage ............ 600 volts
  DC Grid-No.2 Voltage ........ 200 volts
  DC Grid-No.1 Voltage ........ -18 volts
  Peak AF Grid-No.1-to-Grid-No.1 Voltage ... 36 volts
  Zero-Signal DC Plate Current ... 40 ma
  Max.-Signal DC Plate Current ... 110 ma
  Zero-Signal DC Grid-No.2 Current .. 6 ma
  Max.-Signal DC Grid-No.2 Current .. 26 ma
  Effective Load Resistance (Plate-to-plate) ... 13750 ohms
  Max.-Signal Driving Power (Approx.) ... 0 watts
  Max.-Signal Power Output (Approx.) ... 44 watts
PLATE-MODULATED PUSH-PULL RF POWER AMPLIFIER - Class C Telephony (per tube, mod factor 1)
Natural Cooling, Maximum Ratings Absolute-Maximum:           CCS      ICAS
  DC PLATE VOLTAGE .......... 600 max.  600 max. volts
  DC GRID-No.2 VOLTAGE ...... 225 max.  225 max. volts
  DC GRID-No.1 VOLTAGE ...... -175 max. -175 max. volts
  DC PLATE CURRENT .......... 212 max.  212 max. ma
  DC GRID-No.1 CURRENT ...... 15 max.   15 max. ma
  PLATE INPUT ............... 67.5 max. 90 max. watts
  GRID-No.2 INPUT ........... 7 max.    7 max. watts
  PLATE DISSIPATION ......... 21 max.   28 max. watts
  PEAK HEATER-CATHODE VOLTAGE: 100/100  100/100 volts
  BULB TEMPERATURE .......... 235 max.  235 max. °C
  Typical: DC Plate Voltage 600 (CCS) / 425, 600 (ICAS) volts

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829B (continued) — Class C Telephony forced-air & natural detail
CCS / ICAS DC Grid-No.2 from series resistor: 32000Ω→190V, 11000Ω→200V, 25000Ω→200V
DC Grid-No.1 from resistor: 15000Ω→-60V, 43000Ω→-60V, 8600Ω→-60V
Peak RF Grid-No.1-to-Grid-No.1 Voltage: 138 / 212(?) - 150 volts
DC Plate Current: 112 / 212 / 150 ma
DC Grid-No.2 Current: 13 / 21 / 16 ma
DC Grid-No.1 Current (Approx.): 4 / 14 / 7 ma
Driving Power (Approx.): 0.3 / 1 / 0.5 watts
Power Output (Approx.): 50 / 63 / 70 watts
Forced-Air Cooling Maximum Ratings:               CCS      ICAS
  DC PLATE VOLTAGE ......... 600 max.  600 max. volts
  DC GRID-No.2 VOLTAGE ..... 225 max.  250 max. volts
  DC GRID-No.1 VOLTAGE ..... -175 max. -175 max. volts
  DC PLATE CURRENT ......... 212 max.  240 max. ma
  DC GRID-No.1 CURRENT ..... 15 max.   20 max. ma
  PLATE INPUT .............. 90 max.   120 max. watts
  GRID-No.2 INPUT .......... 7 max.    8 max. watts
  PLATE DISSIPATION ........ 28 max.   40 max. watts
  PEAK HEATER-CATHODE V .... 100/100   100/100 volts
  BULB TEMPERATURE ......... 235 max.  235 max. °C

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829B — PUSH-PULL RF POWER AMPLIFIER & OSCILLATOR Class C Telegraphy / Class C FM Telephony
Natural Cooling, Maximum Ratings Absolute-Maximum:          CCS      ICAS
  DC PLATE VOLTAGE ......... 750 max.  750 max. volts
  DC GRID-No.2 VOLTAGE ..... 225 max.  225 max. volts
  DC GRID-No.1 VOLTAGE ..... -175 max. -175 max. volts
  DC PLATE CURRENT ......... 240 max.  240 max. ma
  DC GRID-No.1 CURRENT ..... 15 max.   15 max. ma
  PLATE INPUT .............. 90 max.   120 max. watts
  GRID-No.2 INPUT .......... 7 max.    7 max. watts
  PLATE DISSIPATION ........ 30 max.   40 max. watts
  PEAK HEATER-CATHODE V .... 100/100   100/100 volts
  BULB TEMPERATURE ......... 265 max.  265 max. °C
Typical (Natural cooling): DC Plate Voltage 750 (CCS) / 500, 750 (ICAS)
  DC Grid-No.2 from series resistor 40000Ω→190V; DC Grid-No.1 from resistor 12500Ω→-50V, cathode resistor 360Ω→-50V
  Peak RF Grid1-Grid1: 116/128,124 V; Plate Current 120/230,160 ma; Grid2 Current 14/23,17 ma; Grid1 Current 4/15,7 ma

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829B (continued)
  Driving Power (Approx.): 0.3 / 0.9, 0.4 watt
  Power Output (Approx.): 70 / 83, 90 watts
Forced-Air Cooling Maximum Ratings Absolute-Maximum:        CCS      ICAS
  DC PLATE VOLTAGE ......... 750 max.  750 max. volts
  DC GRID-No.2 VOLTAGE ..... 225 max.  250 max. volts
  DC GRID-No.1 VOLTAGE ..... -175 max. -175 max. volts
  DC PLATE CURRENT ......... 240 max.  240 max. ma
  DC GRID-No.1 CURRENT ..... 15 max.   20 max. ma
  PLATE INPUT .............. 120 max.  150 max. watts
  GRID-No.2 INPUT .......... 7 max.    8 max. watts
  PLATE DISSIPATION ........ 40 max.   45 max. watts
  PEAK HEATER-CATHODE V .... 100/100   100/100 volts
  BULB TEMPERATURE ......... 235 max.  235 max. °C
Typical (Forced-air): Plate Voltage 500/750,750; Grid2 series resistor 13000Ω→200V;
  Grid1 resistor 3000Ω→-45V, cathode resistor 170Ω→-45V; Peak RF Grid1-Grid1 128/124,134V
  Plate Current 230/160,200 ma; Grid2 Current 23/17,20 ma; Grid1 Current 15/7,12 ma
  Driving Power 0.9/0.4,0.8 watt; Power Output 83/90,115 watts
Notes (a-q): a = with external shield up to flange seal. b = Subscript 1 indicates grid-No.1 current does not flow during any part of input cycle. c = Continuous Commercial Service. d = Averaged over any audio-frequency cycle of sine-wave form.

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829B — Notes & Shielding
Note f: input-coupling network resistance in grid-No.1 circuit should not exceed 100000 ohms.
Note p: grid-No.2 voltage must not exceed 600 volts under key-up conditions.
SHIELDING AND BYPASSING: Shielding of the 829B in an rf amplifier is required for stable operation.
MAXIMUM RATINGS vs OPERATING FREQUENCY:
  Operating Freq 200 Mc: Telephony Class C Plate-Modulated 100%, Telegraphy Class C Unmodulated 100%
  Operating Freq 250 Mc: Telephony 89%, Telegraphy 89%

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[Schéma: VHF Plate-Modulated Push-Pull RF Power Amplifier ~200 Mc. Composants C1-C8, R1-R4, L1-L6, T1. Heater Switch 12.6V. +440V with cathode bias.]

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[Dimensional outline mécanique - cotes en pouces, base Medium Molded-Flare Septar 7-pin JEDEC 7-2, bottom view 6 pins + center]

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[Notes mécaniques 1-5 (suite des cotes)]

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[courbes seules — Typical Characteristics For Each Unit: Plate Amperes vs Plate Volts, Ef=12.6V, Grid-No.2 = 200V, séries Grid-No.1 = +25 à -10]

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[courbes seules — Typical Characteristics: Grid-No.1 milliamperes vs Plate Volts, Ef=12.6V, Grid2=200V]

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[courbes seules — Typical Characteristics: Grid-No.2 milliamperes vs Plate Volts, Ef=12.6V, Grid2=200V]