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Rectifier - Half Wave ·Rectifier

35W4

Indirectly heated half-wave rectifier for 150 mA series-heater AC/DC receiver supplies, with a heater tap for a dial lamp. Its compact miniature construction became common in transformerless radios.

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

Description

150 mA series-heater half-wave rectifier for AC/DC receiver power supplies, with provision for a dial 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
7-pin miniature
Socket code
B7G
Base pins
7
Nominal heater voltage
35 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7-pin miniature - 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
360 V
Rectifier nominal output current
110 mA
Rectifier peak forward current
660 mA
Rectifier forward voltage drop
15 V
Rectifier max heater-cathode voltage
330 V
Rectifier warm-up time
20 s

Output current maximum without panel lamp.

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

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • RMS input maximum

    240 V

  • Reservoir capacitance maximum

    40 uF

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • DC Output Current

    100 mA

    HalfWave

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Heater Voltage

    35 V

  • Heater Current

    150 mA

  • PanelLampTapPresent

    1 boolean

  • Panel Lamp Section Voltage

    7.5 V

    NoLamp

  • Panel Lamp Section Voltage

    5.5 V

    WithLamp

Other

  • PeakInverseVoltageMaximum

    330 V

  • PeakPlateCurrentMaximum

    600 mA

  • DCOutputCurrentMaximum

    100 mA

  • HeaterCathodeVoltageMaximum

    330 V

  • Reservoir Capacitance

    40 uF

    CapacitorInputFilter

  • RMSInputVoltage

    117 V

    HalfWaveRectifier

Data set 04

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • RectifierMaximumPeakInverseVoltage

    360 V

    Published datasheet value

  • RectifierNominalOutputCurrent

    110 mA

    Published datasheet value

  • RectifierPeakForwardCurrent

    660 mA

    Published datasheet value

  • RectifierForwardVoltageDrop

    15 V

    Published datasheet value

  • Heater Voltage

    35 V

    Nominal heater rating

  • Heater Current

    150 mA

    Nominal heater rating

  • DCOutputCurrentWithPanelLampNoShunt

    66 mA

    PanelLamp

  • DCOutputCurrentWithPanelLampShunt

    100 mA

    PanelLamp

  • PanelLampHeaterSectionVoltage

    7.5 V

    WithoutPanelLamp

  • PanelLampHeaterSectionVoltage

    5.5 V

    WithPanelLamp

Data set 05

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater or filament voltage

    35 V

    Published nominal value

  • Heater or filament current

    150 mA

    Published nominal value

Other

  • Filter input capacitance

    40 uF

    Capacitor-input filter

  • Maximum rectified current

    100 mA

    Without dial lamp

Data set 06

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

    100 mA

Characteristics

  • Panel-Lamp Heater Section Voltage

    7.5 V

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Entire Heater (pins 3 and 4) 35

    32 V

    Published in approved 35W4 target datasheet entry; Section1

  • Panel Lamp Section (pins 4 and 6) 7.5

    5.5 V

    Published in approved 35W4 target datasheet entry; Section1

  • Between Pins 3 and 6

    150 mA

    Published in approved 35W4 target datasheet entry; Section1

  • Peak Inverse Plate Voltage

    360 V

    Published in approved 35W4 target datasheet entry; Section1

  • Peak Plate Current

    660 mA

    Published in approved 35W4 target datasheet entry; Section1

  • Panel tLamp t >

    66 mA

    Published in approved 35W4 target datasheet entry; Section1

  • { shl)ntinK Res stor j

    100 mA

    Published in approved 35W4 target datasheet entry; Section1

  • Without Panel Lamp

    110 mA

    Published in approved 35W4 target datasheet entry; Section1

  • AC Plate-Supply Voltage (rms) 117 117 117

    117 V

    Published in approved 35W4 target datasheet entry; Section1

  • Minimum Total Effective Plate-Supply Impedance 15 15 15

    15 Ω

    Published in approved 35W4 target datasheet entry; Section1

  • Panel-Lamp Shunting Resistor 300 150

    100 Ω

    Published in approved 35W4 target datasheet entry; Section1

  • Average Output Current 60 70 80

    90 mA

    Published in approved 35W4 target datasheet entry; Section1

  • AC Plate-Supply Voltage (rms)

    117 V

    Published in approved 35W4 target datasheet entry; Section1

  • Minimum Total Effective Plate-Supply Impedance

    15 Ω

    Published in approved 35W4 target datasheet entry; Section1

  • Average Output Current

    100 mA

    Published in approved 35W4 target datasheet entry; Section1

  • At half-load current (

    50 mA

    Published in approved 35W4 target datasheet entry; Section1

  • At half-load current (50 mA)

    135 V

    Published in approved 35W4 target datasheet entry; Section1

  • At full-load current (

    100 mA

    Published in approved 35W4 target datasheet entry; Section1

  • At full-load current (100 mA)

    120 V

    Published in approved 35W4 target datasheet entry; Section1

  • Half-load to full-load current

    15 V

    Published in approved 35W4 target datasheet entry; Section1

  • f

    70 mA

    Published in approved 35W4 target datasheet entry; Section1

  • f 70 mA

    800 Ω

    Published in approved 35W4 target datasheet entry; Section1

  • For dc output current of I

    80 mA

    Published in approved 35W4 target datasheet entry; Section1

  • For dc output current of I 80 mA

    400 Ω

    Published in approved 35W4 target datasheet entry; Section1

  • L

    90 mA

    Published in approved 35W4 target datasheet entry; Section1

  • L 90 mA

    250 Ω

    Published in approved 35W4 target datasheet entry; Section1

Characteristic

  • Ef =

    35 V

    Published in approved 35W4 target datasheet entry; Section1

  • IMPEDANCE =

    5 Ω

    Published in approved 35W4 target datasheet entry; Section1

Capacitance

  • C = CAPACITOR INPUT TO FILTER should equal

    117 V

    Published in approved 35W4 target datasheet entry; Section1

  • C = CAPACITOR INPUT TO FILTER should equal 117 volts at

    150 mA

    Published in approved 35W4 target datasheet entry; Section1