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Rectifier - Half Wave ·Rectifier

25Z4GT

Cathode-type half-wave rectifier for transformerless receivers using series-connected heaters. Manufacturer documentation establishes its AC/DC power-supply application, though complete promoted electrical ratings are unavailable in the current record.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
25 V / 300 mA

Description

BANTAM June 6, 1939 GENERAL DESCRIPTION Application: The Hytron 25Z4ACT {s a cathode type half-wave rectifier designed for operation in transformerless receivers having the filaments connected in series.

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
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

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted ratings/characteristics from 25Z4GT.pdf.

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.

No source-specific operating conditions are recorded.