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Rectifier - TV Line Scan Boost ·Rectifier

EY87

Television flyback/EHT rectifier with treated envelope for improved flashover resistance, designed to generate CRT accelerating voltage from horizontal-output pulses.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
Noval
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 90 mA

Description

High-voltage half-wave rectifier for television flyback EHT service. The EY87 uses a treated envelope for improved flashover resistance.

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
Noval
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
90 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Noval - 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

Rectifier

X-ray radiationInterelectrode capacitances
Plate resistance
0.02 Ω
Max cathode current
3 mA
Rectifier peak inverse voltage
22000 V
Rectifier nominal output current
0.5 mA
Rectifier peak forward current
40 mA

Filename-matched Russian entry only.

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 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Capacitance

  • Anode capacitance

    1.55 pF

    WithoutExternalShield

Characteristic

  • Internal resistance at 1 mA output

    20 kOhm

Other

  • Peak inverse voltage

    22000 V

    PulsedEHT

  • Peak inverse voltage at zero output

    24000 V

    PulsedEHT

  • Absolute peak inverse voltage

    27000 V

    PulsedEHT

  • Maximum DC output current

    0.5 mA

    PulsedEHT

  • Short-period DC output current

    0.8 mA

    TelevisionService

  • Maximum DC output current

    3 mA

    50HzSinusoidal

Data set 02

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • I

    90 mA

    Published in approved EY87 target datasheet entry; Section1

  • 1

    7 pF

    Published in approved EY87 target datasheet entry; Section1

  • t P . I. V. max

    22000 V

    Published in approved EY87 target datasheet entry; Section1

  • ( ttia(Pk) max

    40 mA

    Published in approved EY87 target datasheet entry; Section1

  • C m ax

    2000 pF

    Published in approved EY87 target datasheet entry; Section1

  • Vin (r . m .s . ) max . 5

    0 V

    Published in approved EY87 target datasheet entry; Section1

  • when operated above

    16000 V

    Published in approved EY87 target datasheet entry; Section1

  • Pins 1, 4,6 and

    9 mA

    Published in approved EY87 target datasheet entry; Section1

Data set 03

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    90 mA

    Published nominal value

Other

  • Maximum DC anode current

    0.8 mA

    Television flyback EHT

  • X-ray shielding threshold

    16 kV

    Design-centre PIV warning

Data set 04

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater current

    90 mA

    Translated from Russian source; Ток накала . К, 90 мА

  • Plate current

    12 mA

    Translated from Russian source; Ток анода (при !./д=100 В) МАЕ ВНО 12 мА

  • Capacitance

    1.8 pF

    Translated from Russian source; Емкость между анодом и катодом . . . . . , . 1,8 пФ

  • Plate current

    100 mA

    Translated from Russian source; Ток анода . . . . . .. ., 100 мА

  • Transconductance

    14 mA/V

    Translated from Russian source; Крутизна характеристики . . ‚ . . . . .. .. , 14 мА/В

  • Amplification factor

    1

    Translated from Russian source; Коэффициент усиления по 2-Й сетке относительно 1-Й

Other

  • Rectified current

    150 mA

    Translated from Russian source; Выпрямленный ток (при Пвы„р__18 кВ) К .. . . 150 мкА

  • Peak inverse voltage

    22 V

    Translated from Russian source; Обратное напряжение (в импульсе} . . . . , ,, 22 кВ

  • Rectified current

    800 mA

    Translated from Russian source; Выпрямленный ток (среднее значение) . . . . . 800 мкА

  • Heater voltage

    25 V

    Translated from Russian source; Напряжение накала . . . . . . . . .. .. ,, 25 В

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Published electrical datum

    6.3 V

    Chauffage: indirect par C.A. ou C.C. Ve = 6,3 V)%)

  • Published electrical datum

    6.3 V

    Chauffage: indirect par C.A. ou C.C. Ve = 6,3 V)°)

  • Published electrical datum

    90 ma

    alimentation parallele Ir = 90 ma

  • Published electrical datum

    -

    i A\ N 1=

  • Published electrical datum

    1 mA

    Caractéristigues types Ry (Io =1 mA) = 20 kQ

  • Published electrical datum

    0.15 mA

    1, = 0,15 mA

  • Published electrical datum

    1.55 pF

    Capacite sans blindage extérleur) Cz = 1,55 pF

  • Published electrical datum

    1 ma

    = 1 ma) 20 k@

  • Published electrical datum

    0.15 mA

    I 0,15 mA

  • Published electrical datum

    18 kV

    Vo 18 kV

  • Published electrical datum

    22 kV

    Va invp = pax. 22 kV 3)4)

  • Published electrical datum

    -

    Caracteristiques limites pour utilisation a S0 Hz avec

  • Published electrical datum

    0.1 MQ

    R, = min. 0,1 MQ

  • Published electrical datum

    -

    peut &tre réglée a 6,} V par example par une mesure

  • Published electrical datum

    6.3 V

    mittels Messung mit einem Thermoelement auf 6,3 V ein-

  • Published electrical datum

    -

    Caractéristiques limites pour utilisation & 50 Hz avec

  • Published electrical datum

    0.1 MQ

    Ry = min. 0,1 MQ

  • Published electrical datum

    6.3 V

    peut &tre réglée a. 6,3 V par example par une mesure

  • Published electrical datum

    -

    value at a D.C. output current of 20Q uA., At an increase

  • Published electrical datum

    400 a

    of the D.C. output current to 400 a 600 pA which can

  • Published electrical datum

    400 a

    allant jusqu'a 400 a 600 pA, accroissement pouvant se

  • Published electrical datum

    -

    value at a D.C. output current of 20Q pA. At an increase

  • Published electrical datum

    400 a

    allant Jusqu'a 400 a 600 pA, accrolssement pouvant se

  • Published electrical datum

    1 a

    continue positive peut étre d'environ 1 a 4,5

  • Published electrical datum

    1 a

    continue positive peut &tre d'environ 1 a 4,5

  • Published electrical datum

    0.8 mA

    0.8 mA L.

  • Published electrical datum

    250 V

    50 100 150 200 250 V,(V) 300

Other

  • Published electrical datum

    24 kv

    Va tnvp (Io = 0) = max. 24 kv °)%)

  • Published electrical datum

    27 kv

    Va 1nvp = max. 27 kv 4%

  • Published electrical datum

    0.8 mA

    Io = max. 0,8 mA 6

  • Published electrical datum

    40 mA

    lap = max. 40 mA °)

  • Published electrical datum

    2000 pF

    Crilt = max. 2000 pF

  • Published electrical datum

    3 mA

    Io = max. 3 mA

  • Published electrical datum

    0.2 µF

    Crilt = max. 0,2 uF

  • Published electrical datum

    22 kv

    Va invp = max. 22 kv 2)%

  • Published electrical datum

    24 kv

    Va invp (To = 0) = max. 24 kv 2)%)

  • Published electrical datum

    0.5 mA

    Io = max. 0,5 mA 6)

  • Published electrical datum

    40 mA

    Tap = max. 40 mA 7)

  • Published electrical datum

    -

    au maximum a 15%. Ces exigences sont valables pour la

  • Published electrical datum

    -

    au maximum a 15%. Ces exlgences sont valables pour la

  • Published electrical datum

    -

    Maximum pulse duration 22 % of a line scanning cycle

  • Published electrical datum

    -

    with a maximum of 18 usec

  • Published electrical datum

    -

    Maximum pulse duration 10 % of a line scanning cycle

  • Published electrical datum

    -

    with a maximum of 10 psec

  • Published electrical datum

    -

    ) Maximum pulse duration 22 % of a line scanning cycle

  • Published electrical datum

    -

    with a maximum of 18 psec ,

  • Published electrical datum

    0.8 mA

    vision I5 = max. 0,8 mA

  • Published electrical datum

    0.8 mA

    = max. 0,8 mA

  • Published electrical datum

    -

    Maximum pulse duration 10 % of a line scanning cycle|

  • Heater voltage

    6.3 V

    Nominal heater rating

  • Heater current

    90 mA

    Nominal heater rating