FG190

Directly heated gas-filled all-metal full-wave rectifier for low-voltage, high-current power supplies. Its heavy filament and low gas-discharge forward voltage support ampere-class industrial rectification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 2.5 V / 1.2 A

Description

Gas-filled all-metal full-wave rectifier for low-voltage service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 2.5 V
Nominal heater current: 1.2 A
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

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 175 V
Rectifier nominal output current: 1.25 A
Rectifier peak forward current: 5 A
Rectifier forward voltage drop: 8 V

Gas-filled phanotron; 5 A is the published instantaneous anode-current rating at 25 cycles and above.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 175 V
Rectifier nominal output current: 1.25 A
Rectifier peak forward current: 5 A
Rectifier forward voltage drop: 8 V

Physical rectifier section 2; identical section values duplicated per physical-section policy.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Instantaneous Anode Current Below 25 Cycles
2.5 A
Surge Anode Current
20 A
DesignOnly

Characteristic

Pick-up Voltage Either Anode
14 V
Typical