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Power - TV Vertical Output ·Pentode-Triode

PCL83

Power-output pentode designed for television frame/vertical time-base output and audio power-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
B9A
Socket code
B9A
Base pins
9
Nominal heater
12.6 V / 300 mA

Description

TriodePentode; electrical ratings and operating data extracted from the supplied Mullard datasheet.

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
B9A
Socket code
B9A
Base pins
9
Nominal heater voltage
12.6 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

B9A - 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
7700 Ω
Transconductance
0.0022 S
Amplification factor
17
Max plate voltage
250 V
Max plate dissipation
3.5 W
Max cathode current
15 mA

Frame blocking-oscillator triode section.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
53000 Ω
Transconductance
0.0055 S
Amplification factor
10
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
5.4 W
Max screen dissipation
1.2 W
Max cathode current
45 mA

Frame output pentode 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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    12.6 V

  • HeaterOrFilamentCurrent

    300 mA

  • Plate Voltage

    250 V

  • Plate Current

    10.5 mA

  • Grid Voltage

    -8.5 V

  • Transconductance

    2.2 mA/V

  • Plate Resistance

    7.7 kohm

  • Amplification Factor

    17

SECTION 2

Pentode

Characteristic

  • Plate Voltage

    170 V

  • Screen Voltage

    170 V

  • Plate Current

    30 mA

  • Screen Current

    5 mA

  • Grid Voltage

    -9.5 V

  • Transconductance

    5.5 mA/V

  • Plate Resistance

    53 kohm

Other

  • PeakPositivePlateVoltageMaximum

    2000 V

    FrameOutput

Data set 02

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Current Ih

    3 A

  • Heater Voltage Vh

    126 V

  • Maximum Anode Dissipation pa(max) 3.5

    54 W

  • Maximum Screen Grid Dissipation pg2(max) —

    12 W

  • Maximum Anode Supply Voltage Va(b)max 550

    550 V

  • Maximum Anode Voltage Va(max) 250

    250 V

  • Maximum Peak Positive Anode Voltage va(pk)max —

    20 kV

  • Maximum Screen Grid Supply Voltage V82 (b)max —

    550 V

  • Maximum Screen Grid Voltage V82 (max) —

    250 V

  • Heater Positive 100

    100 V

  • Maximum Cathode Current Ik(max) 15

    45 mA

  • Control Grid to Heater cgl _h —

    4 pF

Characteristic

  • Speech and Music —

    2.4 W

  • Input n 23

    5.7 pF

  • Output Gout 032

    4.7 pF

  • Anode to Control Grid ca.gl 16 <

    2 pF

  • Anode Voltage Va 250

    170 V

  • Screen Grid Voltage V$a —

    170 V

  • Control Grid Voltage Vgl —85 —9

    5 V

  • Anode Current la 105

    30 mA

  • Screen Grid Current IS2

    5 mA

  • Mutual Conductance gm 22

    55 mA