Skip to main content

Rectifier - Half Wave ·Rectifier

50DC4

Miniature half-wave rectifier for 150 mA series-string line-operated equipment, with a tapped heater for a panel lamp. It provides conventional transformerless power-supply rectification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
50 V / 150 mA

Description

The 50DC4 is a seven-pin miniature half-wave rectifier for line-operated series-heater equipment, with a heater tap for a panel lamp.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
50 V
Nominal heater current
150 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
Rectifier peak inverse voltage
330 V
Rectifier nominal output current
120 mA
Rectifier peak forward current
720 mA
Rectifier forward voltage drop
21 V
Rectifier max heater-cathode voltage
330 V

Nominal output current uses the maximum published no-panel-lamp DC output rating; panel-lamp cases are 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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage

    50 V

  • Heater current

    150 mA

  • Maximum AC plate voltage RMS

    117 V

    WithPanelLamp

  • Maximum DC output current

    110 mA

    WithPanelLamp

  • Heater tap voltage

    7.5 V

    WithoutPanelLamp

  • Filter input capacitor

    40 uF

    WithoutPanelLamp

  • DC output voltage at filter input

    130 V

    55mAOutput

  • DC output voltage at filter input

    110 V

    110mAOutput

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum peak inverse plate voltage

    330 V

    HalfWaveRectifier

  • Maximum steady-state peak plate current

    720 mA

    HalfWaveRectifier

  • Maximum DC output current without panel lamp

    120 mA

    HalfWaveRectifier

  • Typical AC plate supply voltage

    117 V

    HalfWaveRectifier

  • Typical filter input capacitor

    40 uF

    CapacitorInputFilter

  • Typical DC output current

    110 mA

    HalfWaveRectifier

  • Rectifier maximum peak inverse voltage

    330 V

    PromotedValue

  • Rectifier nominal output current

    120 mA

    PromotedValue

  • Rectifier peak forward current

    720 mA

    PromotedValue

  • Rectifier maximum heater-cathode voltage

    330 V

    PromotedValue

  • Maximum Heater- Tap Voltage When Panel Lamp Fails I Rms

    16.5 V

    PublishedTable

  • Heater Positive With Respect To Cathode

    330 V

    PublishedTable

  • Heater Negative With Respect To Cathode

    330 V

    PublishedTable

  • Heater Voltage (Pin } To Pin 4) 45 45 45

    45 V

    PublishedTable

  • Heater —Tap Voltage (Pin 4 To Pin 6) 5.5 5.5 5.5

    5.5 V

    PublishedTable

  • Ac Plate- Supply Voltage S Rms 117 117 117

    117 V

    PublishedTable

  • Impedance 15 15 15

    15 ohm

    PublishedTable

  • Heater Current

    150 mA

    PublishedTable

  • Heater Voltage(Pin }To Pin 4)

    50 V

    PublishedTable

  • Neater-Tap Voltage (Pin 4 To Pin 6)

    7.5 V

    PublishedTable

  • Heater Current (Between Pins } ~ ¢)

    150 mA

    PublishedTable

  • Total Effective Plate- Supply Impedance

    15 ohm

    PublishedTable

  • Dc Output Current

    110 mA

    PublishedTable

  • For Dc Output Current Of 55 Ma.

    130 V

    PublishedTable

Characteristics

  • Tube voltage drop at 240 mA

    21 V

  • Rectifier forward voltage drop

    21 V

    PromotedValue

  • Ax 50T10~ Volts

    150 mA

    PublishedTable

Data set 03

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • DC Output Current

    70 mA

    WithPanelLamp

  • DC Output Current

    80 mA

    WithPanelLamp

  • DC Output Current

    90 mA

    WithPanelLamp

  • DC Output Current

    100 mA

    WithPanelLamp

  • DC Output Current

    110 mA

    WithoutPanelLamp

  • AC Plate-Supply Voltage RMS

    117 V

  • Filter Input Capacitor

    40 uF

    CapacitorInputFilter

  • Tube Voltage Drop

    21 V

    Ib=240mA

Data set 04

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak Inverse Voltage

    330 V

  • DC Output Current

    110 mA

Characteristics

  • Panel-Lamp Heater Section Voltage

    7.5 V