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Rectifier - Full Wave ·Rectifier-Rectifier

25X6GT

Dual-section high-vacuum rectifier for series-heater AC/DC receiver power supplies. Its 25 V heater supports voltage-doubler and half-wave configurations with approximately 60 mA nominal output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 7O
Socket code: -
Base pins: 7
Nominal heater: 25 V / 150 mA

Description

High-vacuum rectifier-voltage doubler designed primarily for series-heater operation in AC-DC receivers, usable in voltage-doubler and half-wave rectifier circuits.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7O
Socket code: -
Base pins: 7
Nominal heater voltage: 25 V
Nominal heater current: 150 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7O - 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 nominal output current: 60 mA
Rectifier forward voltage drop: 25 V

Published section data promoted where applicable; additional operating values retained as parameters.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 60 mA
Rectifier forward voltage drop: 25 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

1939 Arcturus

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

AC voltage per plate
125 V
VoltageDoubler
DC output current
60 mA
VoltageDoubler
AC voltage per plate
250 V
HalfWave;100OhmSeriesResistor
DC output current per plate
60 mA
HalfWave

Characteristic

Forward voltage drop
25 V
At120mA

SECTION 2

Rectifier

Other

AC voltage per plate
125 V
VoltageDoubler
DC output current
60 mA
VoltageDoubler
AC voltage per plate
250 V
HalfWave;100OhmSeriesResistor
DC output current per plate
60 mA
HalfWave

Characteristic

Forward voltage drop
25 V
At120mA

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

Heater/filament voltage
25 V
Published heater/filament rating
Heater/filament current
150 mA
Published heater/filament rating
Tube voltage drop
25 V
At 120 mA DC

Other

DC output current
60 mA
RectifierDoubler
RMS supply voltage
125 V
RectifierDoubler

SECTION 2

Rectifier

Characteristic

Heater/filament voltage
25 V
Published heater/filament rating
Heater/filament current
150 mA
Published heater/filament rating
Tube voltage drop
25 V
At 120 mA DC

Other

DC output current
60 mA
RectifierDoubler
RMS supply voltage
125 V
RectifierDoubler