25Z6GTG

Twin high-vacuum rectifier with two separate sections for AC/DC receiver power supplies. It supports voltage-doubler, full-wave, or half-wave operation with approximately 800 V peak inverse-voltage capability and 75 mA nominal output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: 8
Nominal heater: 25 V / 300 mA

Description

The 25Z6GT/G contains two separate high-vacuum rectifier sections for AC/DC receiver power supplies and may be used as a voltage doubler, full-wave rectifier, or half-wave rectifier.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 8
Nominal heater voltage: 25 V
Nominal heater current: 300 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

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 800 V
Rectifier nominal output current: 75 mA
Rectifier peak forward current: 450 mA
Rectifier forward voltage drop: 22 V
Rectifier max heater-cathode voltage: 350 V

Representative row for two identical rectifier sections; 22 V drop at 150 mA per plate.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 800 V
Rectifier nominal output current: 75 mA
Rectifier peak forward current: 450 mA
Rectifier forward voltage drop: 22 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

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak inverse plate voltage
800 V
WholeTube
DC output current per plate
75 mA
WholeTube
Peak plate current per plate
450 mA
WholeTube
Tube voltage drop at 150 mA
22 V
Characteristic
AC voltage per plate RMS
117 V
VoltageDoubler
DC output current
75 mA
VoltageDoubler

SECTION 2

Rectifier

Other

Peak inverse plate voltage
800 V
WholeTube
DC output current per plate
75 mA
WholeTube
Peak plate current per plate
450 mA
WholeTube
Tube voltage drop at 150 mA
22 V
Characteristic
AC voltage per plate RMS
117 V
VoltageDoubler
DC output current
75 mA
VoltageDoubler