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Voltage Pentode ·Pentode

KL2

Directly heated battery pentode with relatively low plate resistance and 2.5 W dissipation, favoring more substantial output-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
2 V / 265 mA

Description

Directly heated battery pentode. The supplied Philips datasheet provides operating characteristics, limiting values, capacitances, and application information; non-English material is represented in English in the descriptive output.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
2 V
Nominal heater current
265 mA
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

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
30000 Ω
Transconductance
0.002 S
Max plate voltage
135 V
Max screen voltage
135 V
Max plate dissipation
2.5 W
Max screen dissipation
0.5 W
Max cathode current
25 mA

Directly heated battery pentode

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

Pentode

Characteristic

  • Chauffage dir. batterie . Vf •l

    0 V

  • If

    265 mA

  • Vf

    2 V

  • vg2

    13 W

  • A Vas = oov

    1 s

Other

  • Va 90

    135 V

  • Vg2 90

    135 V

  • Ia 11

    18 mA

  • Vgl -7,5

    -12 V

  • Ig2 09

    2 mA

  • S (Vgl [1]

    -12 V

  • S (Vgl [2]

    2 mA/V

  • S (Vgl [1]

    -7.5 V

  • S (Vgl [2]

    18 mA/V

  • Ri (Vgl [1]

    -12 V

  • Ri (Vgl [2]

    30000 Ω

  • Ri (Vgl _ [1]

    -7.5 V

  • Ri (Vgl _ [2]

    30000 Ω

  • Va max

    135 V

  • Wa max

    2.5 W

  • Ik max

    25 mA

  • Vgl max

    135 V

  • Wg2 max

    0.5 W

  • Vgl max (Igl [1]

    0.3 µA

  • Vgl max (Igl [2]

    0.2 V

  • Rgla max

    1.5 MΩ

  • Wo 0,35

    0.8 W

  • Ra 6000

    6000 Ω

  • Vgl eff 50

    8 V