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Power - TV Vertical Output ·BeamPower-Triode

15KY8A

Novar combination tube containing a high-mu triode and beam-power section for television vertical-deflection oscillator and amplifier service in receivers using low-voltage B supplies.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9QT
Socket code
B9A
Base pins
9
Nominal heater
15 V / 450 mA

Description

Novar type used in combined vertical-deflection-os- cillatorand vertical-deflection-amplifier applications in black-and-white television receivers having low-voltage "B" supplies. Outlines section, 30A; requires novar 9- contact socket. Type 15KY8A is identical with type 6KY8A except for heater ratings. 9QT 6KY8A 15KY8A

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

9QT - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
40000 Ω
Transconductance
0.0016 S
Amplification factor
64
Max plate voltage
330 V
Max plate dissipation
1.5 W
Max cathode current
22 mA

Representative electrical section from supplied RCA data sheet. Inherited from explicitly referenced 6KY8A electrical characteristics; heater differs per current sheet.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
18000 Ω
Transconductance
0.0084 S
Amplification factor
7
Max plate voltage
300 V
Max screen voltage
150 V
Max plate dissipation
12 W
Max screen dissipation
1.9 W
Max cathode current
70 mA

Representative electrical section from supplied RCA data sheet. Inherited from explicitly referenced 6KY8A electrical characteristics; heater differs per current sheet.

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 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage nominal

    15 V

  • Heater current

    450 mA

  • Heater voltage

    15 V

    Reference sheet; AC or DC at rated heater current

  • Heater current

    450 mA

    Reference sheet nominal current

  • Warm-up time

    11 s

    Average

Characteristics

  • Grid-No (value 3)

    120 V

    Published source row

  • Grid-No.l Voltage

    -3 V

    Published source row

  • Grid-No.l Voltage (value 2)

    0 V

    Published source row

  • Grid-No.l Voltage (value 3)

    -10 V

    Published source row

  • Plate Resistance (Approx.)

    40000 ohm

    Published source row

  • Plate Resistance (Approx.) (value 2)

    18000 ohm

    Published source row

  • Transconductance

    1600

    Published source row

  • Transconductance (value 2)

    8400

    Published source row

  • Plate Current

    1.4 mA

    Published source row

  • Plate Current (value 2)

    170 mA

    Published source row

  • Plate Current (value 3)

    39 mA

    Published source row

  • Grid-No

    2 mA

    Published source row

  • Grid-No (value 2)

    20 mA

    Published source row

  • Grid-No (value 3)

    3 mA

    Published source row

  • Grid-No

    1

    Published source row

  • DC Plate Voltage

    330 V

    Published source row

  • Peak Negative-Pulse Grid Voltage

    400 V

    Published source row

  • Peak Cathode Current

    77 mA

    Published source row

  • Average Cathode Current

    22 mA

    Published source row

  • Plate- Dissipation

    1.5 W

    Published source row

  • Voltage (AC or DC)

    6.3 V

    Published table column

  • Published electrical value

    1 V

    Published table column

  • Plate Voltage

    250 V

    Published source row

  • Plate Voltage (value 2)

    50 V

    Published source row

  • Plate Voltage (value 3)

    135 V

    Published source row

  • Grid-No

    2 V

    Published source row

  • Grid-No (value 2)

    120 V

    Published source row

SECTION 2

Beam Power

Other

  • Heater voltage nominal

    15 V

  • DC Grid-No

    2 V

    Published source row

  • DC Grid-No (value 2)

    150 V

    Published source row

  • (Control-Grid) Voltage

    250 V

    Published source row

  • Peak Cathode Current

    200 mA

    Published source row

  • Average Cathode Current

    70 mA

    Published source row

  • Plate Dissipation

    12 W

    Published source row

  • Grid-No

    2 W

    Published source row

  • Grid-No (value 2)

    1 W

    Published source row

  • Grid-No (value 3)

    9 W

    Published source row

  • such that the plate dissipation and grid—Xo

    2

    Published source row

  • Heater current

    450 mA

  • DC Plate Voltage

    300 V

    Published source row

  • Peak. Positive-Pulse Plate Voltages

    2000 V

    Published source row

Characteristics

  • GRID-No

    2 V

    Published source row

  • GRID-No (value 2)

    120 V

    Published source row

  • GRID-No

    2

    Published source row

  • GRID-No (value 2)

    2

    Published source row

  • Voltage (AC or DC)

    0.6 V

    Published table column

  • Published electrical value

    6 V

    Published table column

Capacitance

  • Grid No

    1 pF

    Published source row

  • Grid No (value 2)

    0 pF

    Published source row

  • Grid No (value 3)

    48 pF

    Published source row

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

    0.45 amperes

    Published value from supplied target entry

  • Heater Warm-up Time (Average)

    11 seconds

    Published value from supplied target entry

  • Plate Voltage

    120 volts

    Published value from supplied target entry

  • Grid-No

    120 volts

    Published value from supplied target entry

  • Grid-No.l (Control-Grid) Voltage

    -10 volts

    Published value from supplied target entry

  • Amplification Factor

    7

    Published value from supplied target entry

  • Plate Resistance (Approx.)

    18000 ohms

    Published value from supplied target entry

  • Transconductance

    8400

    Published value from supplied target entry

  • Plate Current

    39 mA

    Published value from supplied target entry

  • Grid-No

    3 mA

    Published value from supplied target entry

  • current of

    -24 mA

    Published value from supplied target entry

  • DC Plate Voltage

    300 volts

    Published value from supplied target entry

  • DC Grid-No

    150 volts

    Published value from supplied target entry

  • Peak Negative-Pulse Grid-No.l Voltage

    250 volts

    Published value from supplied target entry

  • Peak Cathode Current

    200 mA

    Published value from supplied target entry

  • Average Cathode Current

    60 mA

    Published value from supplied target entry

  • Plate Dissipation

    12 watts

    Published value from supplied target entry

  • Grid-No

    1.9 watts

    Published value from supplied target entry

Capacitance

  • Grid to Plate

    0.44

    Published value from supplied target entry

  • Grid to Cathode and Heater

    15 PF

    Published value from supplied target entry

  • Plate to Cathode and Heater

    7 pF

    Published value from supplied target entry

  • Plate to Cathode, Heater, Grid No

    0.28 PF

    Published value from supplied target entry