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Power - Tetrode (NOT beam) ·Tetrode-Tetrode

QQC0314

Quick-heating directly heated double tetrode for output, frequency-multiplier, and modulator service in transistorized mobile equipment. Its paired sections support compact mobile RF power circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
9
Nominal heater
3.15 V / 1.65 A

Description

Directly heated quick-heating double tetrode for output, frequency-multiplier, and modulator service in transistorized mobile equipment. The sheet gives intermittent-service limits, typical characteristics, capacitances, and RF operating data.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
3.15 V
Nominal heater current
1.65 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0032 S
Amplification factor
7.5
Max plate voltage
300 V
Max plate dissipation
7 W
Max screen dissipation
1 W

Representative electrical section; the two tetrode systems are electrically identical and are compressed per the identical-section rule.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Filament voltage Ve

    3.15 V

  • Filament current If

    1.65 A

  • than 70 % of the ultimate power Th = max

    1 sec

  • Anode voltage Vg = Va' = max

    300 V

    ClassC;PushPull;Telegraphy;Telephony

  • Anode dissipation Wg = W' = max

    7 W

    PushPull

  • Anode current Ig = Ig' = max

    55 mA

  • Grids No.2 voltase Vgz,gg' max

    200 V

  • Negative grid No.t voltage —Vg1='VS1‘ = max,

    150 V

  • Grid No.?1 dissipation Wg1 w51 = max

    0.2 W

  • Grid No.t current I51 Igy'= max

    4 mA

  • R0pF ps Jooor

    27 w

  • Frequency £ = 200

    200 Mc/s

  • Anode voltage Vo =Va'= 250

    200 V

  • Grids No.2 supply voltage Vbsz,sz 250

    200 V

  • Anode current Ia = Ig'= 45

    45 mA

  • Grids No.2 current Igo,g0" = 42

    5.1 mA

  • Grid No.1 current Igi=Igy = 1.5

    1.5 mA

  • Anode input power Wia=wia' = 11,2

    9 W

  • Anode dissipation W =Wg' = 4.5

    3.5 W

  • Grids No.2 dissipation Wgz,gz' =0.65

    0.85 W

  • Output power Wy = 1

    9.5 W

  • Anode voltage Va = Va = max

    300 V

    FrequencyTripler

  • Anode dissipation Wa = Wg' = max

    7 w

  • Anode current Ia = I = max,

    45 mA

  • Grids No.2 voltage Vgy,gp' = max,

    200 V

  • Grid No.1 current Ig1= 161'= max

    3 mA

  • Cathode current Iy = max., 2x5

    0 mA

  • Peak cathode current Ikp = maX. 2X3

    0 mA

  • Frequency f = 27.5/82.5 82.5/

    165 Mc/s

    FrequencyTripler

  • Anode voltage Va=Vg = 250

    250 V

    FrequencyTripler

  • voltage Vbgz,gz'

    250 v

    FrequencyTripler

  • Grids No.2 current Igs,80

    4 mA

  • Grid No.1 current Igy= Ig; = 0.75

    1.25 mA

  • Anode input power wia= Wig = 5.0

    5 W

  • Grids No.2 dissipation WSg.Eg' = C

    38 v

  • Output power Vo = 1.5

    2 W

  • Output power W = 1,25

    1.5 W

  • Frequency f = 27,5/82.5 82,5/

    165 Mc/s

    FrequencyTripler

  • voltage Vbg2 83

    200 v

    FrequencyTripler

  • Anode current Ig = I3’ = 20

    20 mA

  • Grids No.2 current Igs,g>

    4 mA

  • Grid No.1 current Ig,= Igi'= 0.75

    1.25 mA

  • Anode input power Wig= Wig'= 4.0

    4 W

  • Anode dissipation Wg = Wg' = 2.8

    2.4 W

  • Grids No.2 dissipation Wgs g»'

    0.45 W

  • OQutput power Wo = 1.2

    1.6 W

  • Tentative data 5 [1]

    0 s

  • Tentative data 5 [2]

    0 s

  • sZ (A)PA ooe [1]

    0 s

  • sZ (A)PA ooe [2]

    0 s

  • j; N [1]

    0 S

  • j; N [2]

    0 s

  • B 1962.12.12

    8 C

Characteristic

  • Anode voltage Va

    200 V

  • Grid No.2 voltage V52

    200 V

  • Anode current Ia

    30 mA

Capacitance

  • except grid No.i Ca = Ca

    3.2 pF

  • elements except anode Cey = Cgy

    6.8 pF

  • Grid No.1 to anode Cagy = Cdgy'

    < 0.1 pF

  • Between the grids No.t Cgig

    1.9 pF

  • Between the anodes Caa’

    0.09 pF

  • The tube has been internally neutralized up to

    200 Mc/s