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Rectifier - TV Line Scan Boost ·Rectifier

1BC2A

High-voltage television flyback/EHT rectifier designed to convert horizontal-output transformer pulses into the DC accelerating supply required by the CRT.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
1.25 V / 200 mA

Description

Directly heated miniature half-wave high-voltage flyback rectifier for television picture-tube anode supplies. Electrical ratings and characteristics were taken from the supplied RCA manual excerpt, including the published heater variant where applicable.

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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
1.25 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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
Max cathode current
0.5 mA
Rectifier peak inverse voltage
18000 V
Rectifier nominal output current
0.5 mA
Rectifier peak forward current
45 mA
Rectifier forward voltage drop
80 V

High-voltage flyback/pulse rectifier; X-radiation maximum and filament limits preserved as 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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak Inverse Plate Voltage

    18000 V

    FlybackRectifier

  • Peak Plate Current

    45 mA

  • Average Plate Current

    0.5 mA

  • Filament Voltage Minimum

    1.05 V

  • Filament Voltage Maximum

    1.45 V

Characteristic

  • Tube Voltage Drop

    80 V

    PlateCurrent=7mA

  • X-Radiation Maximum

    0.5 mR/hr

    LotSamplingMaximum