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Rectifier - Half Wave ·Rectifier

1R4

Battery-operated high-frequency diode for small-current half-wave rectification rather than conventional power supplies. Its low-voltage filament and tiny current demand suit portable electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
4AH
Socket code
-
Base pins
8
Nominal heater
1.4 V / 150 mA

Description

High-frequency diode used as a small-current half-wave rectifier. Electrical ratings and representative operating data were extracted from the approved manual page.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
4AH
Socket code
-
Base pins
8
Nominal heater voltage
1.4 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

4AH - 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
Rectifier nominal output current
1 mA
Rectifier forward voltage drop
8 V

High-frequency diode used as a small-current half-wave rectifier.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum AC Plate Voltage

    117 V

  • Maximum DC Output Current

    1 mA

Characteristic

  • Tube Voltage Drop

    8 V

    At 2 mA

  • Resonant Frequency

    1500 MHz

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum RMS supply voltage

    117 V

    HalfWaveRectifier

  • Maximum DC output current

    1 mA

    HalfWaveRectifier

Characteristics

  • Forward voltage drop

    8 V

    At 2 mA DC