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Voltage Triode Pentode ·Pentode-Triode

15DQ8

Television triode-pentode combining synchronization and control functions with signal amplification in color and black-and-white receivers.

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

Description

Miniature type used in color and black-and-white tele- Kr Glp (^yl -2§(7) vision receiver applications. The triode unit is used as ^ffcbz E;:3[r~ a sync-separator, sync-amplifier, keyed-age, or noise- (I/Ot/C^?/® G * i PT suppressor tube. The pentode unit is used as a video- output tube. Outlines section, 6E; requires miniature Gt G2 p 9-contact socket. 9HX

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

9HX - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Base PinBG1 — Control Grid

Original chart label 2G1; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN2Base PinBP — Plate (Anode)

Original chart label 2P; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN3Base PinBK — Cathode

Original chart label 2K; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN4Base Pin—H — Heater

Original chart label H; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN5Base Pin—H — Heater

Original chart label H; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN6Base PinAP — Plate (Anode)

Original chart label 1P; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN7Base PinAG3 — Suppressor GridGroup 9HX7

Original chart label 1G3; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN7Base PinAK — CathodeGroup 9HX7

Original chart label 1K; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN7Base Pin—IS — Internal ScreenGroup 9HX7

Original chart label IS; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN8Base PinAG1 — Control Grid

Original chart label 1G1; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

PIN9Base PinAG2 — Screen Grid

Original chart label 1G2; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HX

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
16200 Ω
Transconductance
0.004 S
Amplification factor
65
Max plate dissipation
1 W

Published ratings and characteristics promoted from the supplied Rogers/Rogers Majestic source.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
150000 Ω
Transconductance
0.0095 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
4 W
Max screen dissipation
1.7 W
Max cathode current
40 mA

Published ratings and characteristics promoted from the supplied Rogers/Rogers Majestic source.

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

1959 Rogers

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    15 V

  • HeaterOrFilamentCurrent

    300 mA

  • Application

    Keyed AGC

SECTION 2

Pentode

Characteristic

  • Application

    Video output

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltage (ac/dc)

    15 volts

    Published value from supplied target entry

  • Heater Current

    0.3 ampere

    Published value from supplied target entry

  • Plate Supply Voltage

    650 volts

    Published value from supplied target entry

  • Plate Voltage

    250 volts

    Published value from supplied target entry

  • Grid-No

    550 volts

    Published value from supplied target entry

  • Grid-No

    250 volts

    Published value from supplied target entry

  • Cathode Current

    40 mA

    Published value from supplied target entry

  • Plate Dissipation

    4 watts

    Published value from supplied target entry

  • Grid-No

    1.7 watts

    Published value from supplied target entry

  • Plate Voltage

    200

    Published value from supplied target entry

  • Grid-No

    220 volts

    Published value from supplied target entry

  • Grid-No.l Voltage

    -3.4 volts

    Published value from supplied target entry

  • Amplification Factor

    65

    Published value from supplied target entry

  • Mu-Factor, Grid-No

    36

    Published value from supplied target entry

  • Plate Resistance (Approx.)

    0.1

    Published value from supplied target entry

  • Transconductance

    10000 mhos

    Published value from supplied target entry

  • Plate Current

    18 mA

    Published value from supplied target entry

  • Grid-No

    3 mA

    Published value from supplied target entry

  • Plate Supply Voltage

    220

    Published value from supplied target entry

  • Grid-No

    220

    Published value from supplied target entry

  • Grid-No

    3.1 mA

    Published value from supplied target entry

Other

  • Peak Heater-Cathode Voltage ±

    200 volts

    Published value from supplied target entry