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Specialized - Cathode Ray ·CathodeRay

9QP4A

Nine-inch lightweight television picture tube designed for small portable receivers, with a low-current heater suitable for series-string operation. General Electric documentation emphasizes compact size and reduced receiver power requirements.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
12AD
Socket code
-
Base pins
12
Nominal heater
9.4 V / 300 mA

Description

The 9QP4A is a television picture tube designed for small size, light weight, and a low-current heater for series-string operation, particularly suitable for small portable television receivers.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
12AD
Socket code
-
Base pins
12
Nominal heater voltage
9.4 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12AD - 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

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Television picture-tube cathode-ray section; CRT ratings preserved in parameters.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • AnodeVoltageMax

    6800 V

    CathodeDrive

  • Grid2VoltageMax

    300 V

    CathodeDrive

  • AnodeVoltageTypical

    5500 V

    CathodeDrive

  • Grid2VoltageTypical

    200 V

    CathodeDrive

  • Heatel C lrrent L I R I I R I A I I I I N I SN I I TR O B BER I I B RO

    300 mA

    GENERAL

  • Heater warm lm Ti me 0 0 0 0 llll l l

    11 s

    GENERAL

  • Diagonal LI I K BN IR B A B A BT B B B IR L U R BE N N N BL I B B B N N IR BB NN BN BN BB NN NN 3

    70 deg

    GENERAL

  • Horizontal 00-Otomaoloincutovln n tcnocoi--u o -atoto

    61 deg

    GENERAL

  • Light Transmission At Center approximatd seeececseseces

    83 %

    GENERAL ELECTRIC COMPANY

  • During Warm-up Period not to exceed

    15 s

    MECHANICAL

  • ANode VOLEAEE 77 aeeunnsssnsesnsenssesncseanaeanesssasenness

    5500 V

    MECHANICAL

  • FOcuSing-El(B CtrOde Cwrent CQ QQQ -Q 15 to +

    25 uA

    MECHANICAL

  • Grid-No 2 Voltage l Db l l- o - l

    200 V

    MECHANICAL

  • Cathode to Grid-No 1 Voltage Pe- vvceevveeorr-ee #+ 28 to +

    52 V

    MECHANICAL

  • general the anode voltage should not be less that

    3500 V

    general the anode voltage should not be less that 3500 volts