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Rectifier - Full Wave ·Rectifier-Rectifier

7Z4

Indirectly heated Loctal full-wave rectifier for AC-operated and automobile-radio equipment. Its 6.3 V heater and useful current capability suit receiver and vehicle-radio power supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 5AB
Socket code: B8G
Base pins: 8
Nominal heater: 6.3 V / 900 mA

Description

Indirectly heated full-wave Loctal rectifier for AC and car-radio equipment, rated for 100 mA rectified current.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5AB
Socket code: B8G
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 900 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5AB - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1250 V
Rectifier nominal output current: 100 mA
Rectifier peak forward current: 300 mA
Rectifier forward voltage drop: 40 V
Rectifier max heater-cathode voltage: 350 V

Published promoted fields populated by semantic section ownership; identical repeated sections compressed.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1250 V
Rectifier nominal output current: 100 mA
Rectifier peak forward current: 300 mA
Rectifier forward voltage drop: 40 V
Rectifier max heater-cathode voltage: 350 V

Second physical rectifier section; electrical properties populated from corresponding identical section.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

RMS Input per Anode
325 V
CapacitorInputFilter
Rectified Current
100 mA
CapacitorInputFilter
Peak Current per Anode
300 mA
Heater-Cathode Potential
450 V
Supply Impedance per Anode
50 ohm
CapacitorInputFilter
Reservoir Capacitor
32 uF
CapacitorInputFilter

SECTION 2

Rectifier

Other

RMS Input per Anode
325 V
CapacitorInputFilter
RMS Input per Anode
325 V
CapacitorInputFilter
Rectified Current
100 mA
CapacitorInputFilter
Rectified Current
100 mA
CapacitorInputFilter
Peak Current per Anode
300 mA
Heater-Cathode Potential
450 V
Supply Impedance per Anode
50 ohm
CapacitorInputFilter
Reservoir Capacitor
32 uF
CapacitorInputFilter

Data set 02

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

RMS Input per Anode
325 V
CapacitorInputFilter
Supply Impedance per Anode
75 ohm
CapacitorInputFilter
Reservoir Capacitance
32 uF
CapacitorInputFilter

SECTION 2

Rectifier

Other

RMS Input per Anode
325 V
CapacitorInputFilter
RMS Input per Anode
325 V
CapacitorInputFilter
Supply Impedance per Anode
75 ohm
CapacitorInputFilter
Supply Impedance per Anode
75 ohm
CapacitorInputFilter
Reservoir Capacitance
32 uF
CapacitorInputFilter
Reservoir Capacitance
32 uF
CapacitorInputFilter

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Maximum RMS supply voltage per plate
325 V
Full-Wave High-Vacuum

Characteristic

Forward voltage drop
40 V
Full-Wave High-Vacuum

SECTION 2

Rectifier

Other

Maximum RMS supply voltage per plate
325 V
Full-Wave High-Vacuum
Maximum RMS supply voltage per plate
325 V
Full-Wave High-Vacuum

Characteristic

Forward voltage drop
40 V
Full-Wave High-Vacuum
Forward voltage drop
40 V
Full-Wave High-Vacuum

Data set 04

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak Inverse Voltage
1250 V
DC Output Current
100 mA

SECTION 2

Rectifier

Other

Peak Inverse Voltage
1250 V
Peak Inverse Voltage
1250 V
DC Output Current
100 mA
DC Output Current
100 mA