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Rectifier - Damper Diode ·Rectifier

6DW4B

Novar half-wave vacuum rectifier used as a damper diode in color and black-and-white television horizontal-deflection circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9HP
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 1.2 A

Description

Novar half-wave vacuum rectifier used as a damper tube in horizontal-deflection circuits of color and black-and-white television receivers.

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
9HP
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
1.2 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9HP - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Base Pin—IC

Original chart label IC; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN2Base Pin—P — Plate (Anode)

Original chart label P; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN3Base Pin—IC

Original chart label IC; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN4Base Pin—H — Heater

Original chart label H; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN5Base Pin—H — Heater

Original chart label H; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN6Base Pin—IC

Original chart label IC; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN7Base Pin—P — Plate (Anode)

Original chart label P; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN8Base Pin—IC

Original chart label IC; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

PIN9Base Pin—K — Cathode

Original chart label K; manufacturer verification pending

Unverified

EIA Base Connections printed p133, 9HP

Section ratings

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Max plate dissipation
8.5 W
Rectifier peak inverse voltage
5500 V
Rectifier nominal output current
250 mA
Rectifier peak forward current
1.3 A
Rectifier forward voltage drop
25 V
Rectifier max heater-cathode voltage
5000 V
Rectifier warm-up time
11 s

Television damper diode.

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

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage

    6.3 V

  • Heater current

    1.2 A

  • Peak inverse plate voltage

    5500 V

    DamperService

  • Peak plate current

    1300 mA

    DamperService

  • DC plate current

    250 mA

    DamperService

  • Plate dissipation

    8.5 W

  • Peak heater-cathode voltage heater negative

    -5500 V

  • DC heater-cathode voltage heater negative

    -900 V

  • Peak heater-cathode voltage heater positive

    300 V

  • DC heater-cathode voltage heater positive

    100 V

Characteristic

  • Tube voltage drop

    25 V

    PlateCurrent=350mA

Capacitance

  • Plate-to-cathode-and-heater capacitance

    6.5 pF

  • Cathode-to-plate-and-heater capacitance

    9 pF

  • Heater-to-cathode capacitance

    2.8 pF

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak Inverse Plate Voltage

    5500 V

    DamperService

  • Peak Plate Current

    1300 mA

    DamperService

  • Average Plate Current

    250 mA

    DamperService

  • Plate Dissipation

    8.5 W

    DamperService

  • Peak Heater-Cathode Voltage Negative

    -5000 V

    DamperService

  • Average Heater-Cathode Voltage Negative

    -900 V

    DamperService

Characteristic

  • Tube Voltage Drop

    25 V

    PlateCurrent350mA