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866B

Taylor directly heated mercury-vapor half-wave rectifier for high-voltage supplies. Its gas-assisted conduction provides efficient transmitter and industrial AC-to-DC conversion.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: UX4
Base pins: -
Nominal heater: 5 V / 5 A

Description

The 866B is a Taylor half-wave mercury-vapor rectifier for high-voltage power-supply service.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: UX4
Base pins: -
Nominal heater voltage: 5 V
Nominal heater current: 5 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

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 8500 V
Rectifier peak forward current: 1 A
Rectifier forward voltage drop: 15 V

Published maximum ratings and characteristics promoted from the approved datasheet; mode-specific values preserved as parameters.

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

193X Taylor Transmitting

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Filament Voltage
5 V
Nominal published value
Filament Current
5 A
Nominal published value
Inverse Peak Voltage
8500 V
Half-wave mercury-vapor rectifier
Peak Current
1 A
Half-wave mercury-vapor rectifier

Characteristics

Approximate Voltage Drop
15 V
Per tube