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Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode

DBC21

Directly heated double-diode triode for battery receivers, combining two detector or rectifier diodes with a voltage-amplifier triode. The arrangement provides detector, control-voltage, and low-frequency amplification functions in one valve.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
-
Socket code
-
Base pins
-
Nominal heater
1.4 V / 50 mA

Description

Directly heated dual-diode triode intended for detector and low-frequency amplifier applications. The datasheet provides triode gain, transconductance, plate resistance, capacitances, heater data, and operating conditions.

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
1.4 V
Nominal heater current
50 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

3 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Physical section from dual-diode-triode datasheet.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Physical section from dual-diode-triode datasheet.

Section 3

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
30000 Ω
Transconductance
0.00085 S
Amplification factor
25
Max plate voltage
135 V

Physical section from dual-diode-triode datasheet.

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 0-D

Published operating points and test conditions from this source.

SECTION 3

Triode

Characteristic

  • van

    1.4 V

    Published datasheet condition

  • van 1,4 V en een gloeistroom van

    50 mA

    Published datasheet condition

  • versterkingsfactor van 25; de steilheid bedraagt

    0.85 mA

    Published datasheet condition

  • anodespanning van

    90 V

    Published datasheet condition

  • anodespanning van 90 V en

    0.9 mA

    Published datasheet condition

  • anodespanning van 90 V en 0,9 mA/V bij een anodespanning van

    120 V

    Published datasheet condition

  • De inwendige weerstand bedraagt 30000, resp. 28

    0 Ω

    Published datasheet condition

  • indien op deze lamp een balanseindtrap met de DLL

    21 v

    Published datasheet condition

  • gloeidraden, elk voor

    25 mA

    Published datasheet condition

  • Gloeispanning . . « « + + v 4 4 o 0 0 e . .. Ve

    14 V

    Published datasheet condition

  • Gloeistroom . . . « « . v v v v o v e e e e e Iy

    50 mA

    Published datasheet condition

  • Anode/roostercapaciteit . . . . . . . . . ... ... Cag

    2.6 pF

    Published datasheet condition

  • Rooster/gloeidraadcapaciteit . . . . . . . . . . ... Cyy

    1.7 pF

    Published datasheet condition

  • Anode/gloeidraadcapaciteit . . . . . . . . . .. oo . Co

    4 pF

    Published datasheet condition

  • Capaciteit tusschen de beide dioden . . . . . . . . . Caiag

    1.2 pF

    Published datasheet condition

  • Capaciteit tusschen diode 1 en gloeidraad . . . . . . . C.;lf

    24 pF

    Published datasheet condition

  • Capaciteit tusschen diode 2 en gloeidraad . . . . . . . Cy,

    2 pF

    Published datasheet condition

  • Capaciteit tusschen de beide dioden en rooster . . . . C(g+dy)

    0.01 pF

    Published datasheet condition

  • Capaciteit tusschen de beide dioden en anode . . . . . C(g+d)e

    0.1 pF

    Published datasheet condition

  • Anodespanning , . . . . . . e e e e e e e e e e Ve = 90

    120 V

    Published datasheet condition

  • Neg. roosterspanning . . . . « « « « + o+ 4 . . . Vg = —05 —

    15 V

    Published datasheet condition

  • Anodestroom « . . ¢ v . 4 4 e v e v e s s s e e . I, = 1,4

    1.6 mA

    Published datasheet condition

  • Inwendige weerstand . . . . . . . . . . ... .. R;i = 30000

    28000 Ω

    Published datasheet condition

  • Published value

    15 V

    Published datasheet condition

  • Published value

    3673 V

    Published datasheet condition

  • DBC

    21 a

    Published datasheet condition

  • DBC 21 als L.F. versterker met weerstandkoppeling, spanning, bij ¥a

    90 V

    Published datasheet condition

  • DBC 21 als L.F. versterker met weerstandkoppeling, spanning, bij ¥a = 90 V en

    120 V

    Published datasheet condition

  • Batterijspanning . . . . . . . Vs = 90

    120 V

    Published datasheet condition

  • Anode-serieweerstand . . . . . R, = 0,2 0,5 0,2

    0.5 MΩ

    Published datasheet condition

  • Neg. roosterspanning . . . . . V; = —0,5 —0,5 —1 —

    1 V

    Published datasheet condition

  • Anodestroom . . . . . . . . . I, = 0,19 0,09 0,27

    0.14 mA

    Published datasheet condition

  • spanning van Voeg

    3 V

    Published datasheet condition

  • spanning van Voeg = 3V . Vieg = 0,19 0,16 0,18

    0.15 V

    Published datasheet condition

  • Published value

    3 V

    Published datasheet condition

  • 2 / AT e 7 TA

    -65 V

    Published datasheet condition

  • £}7|

    -7 V

    Published datasheet condition

  • LY

    75 V

    Published datasheet condition

  • [4] 50 100 150

    200 V

    Published datasheet condition

Other

  • Anodespanning . . . . . . . . e e e e e e e e e« Vo

    135 V

    Published datasheet condition

  • Anpodedissipatie . . . . . . . 0 o 0 e e e e e e e e Wa

    0.3 W

    Published datasheet condition

  • Kathodestroom . . . ¢« v v v v v v o v o o v v o o o & Ix

    3 mA

    Published datasheet condition

  • Max. uitwendige weerstand tusschen rooster en gloeidraad . R,

    3 MΩ

    Published datasheet condition

  • Beginpunt van roosterstroom (I; = + 0,3 pA) . . . . . Vzj = max. —

    2 V

    Published datasheet condition

  • Laagste grens voor de gloeispanning . . . . . . . . .. Vi

    1.1 V

    Published datasheet condition

  • Hoogste grens voor de gloeispanning . . . . . . . . . . V)

    1.5 V

    Published datasheet condition

  • Topwaarde van de spanning op diede 1 . . . . . ... Vg

    125 V

    Published datasheet condition

  • Topwaarde van de spanning op diede 2 . . . . . ... Vg

    125 V

    Published datasheet condition

  • Max. gelijkstroom door den lekweerstand van diode 1 . . I3

    0.2 mA

    Published datasheet condition

  • Max. gelijkstroom door den lekweerstand van diede 2 . . Iy,

    0.2 mA

    Published datasheet condition

  • Beginpunt van diodestroom . . . . . . V4 (I = + 0,3 pA) = max. —

    0.4 V

    Published datasheet condition

  • Beginpunt van diodestroom . . . . . . Vg, (Igo = + 0,3 pA) = max. —

    0.7 V

    Published datasheet condition

  • triodegedeelte een negatieve spanning van ten minste

    0.5 V

    Published datasheet condition

  • gevallen bij een neg. roosterspanning van max. —

    0.2 V

    Published datasheet condition