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1138

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for battery charging and cinema rectifier equipment. Rated for approximately 275 V peak inverse voltage and 15 A nominal output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: GOLIATH
Socket code: -
Base pins: -
Nominal heater: 2.5 V / 27 A

Description

1138 is a directly heated industrial rectifier. Directly heated gas-filled rectifier with mercury-vapour/gas filling for battery charging and cinema rectifier service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: GOLIATH
Socket code: -
Base pins: -
Nominal heater voltage: 2.5 V
Nominal heater current: 27 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

GOLIATH - 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: 275 V
Rectifier nominal output current: 15 A
Rectifier peak forward current: 85 A
Rectifier forward voltage drop: 10 V
Rectifier warm-up time: 120 s

Directly heated gas-filled rectifier with mercury-vapour/gas filling for battery charging and cinema rectifier service.

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

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

Arc voltage drop
10 V
GasFilled

Other

Maximum peak inverse anode voltage
275 V
Maximum average anode current
15 A
Maximum peak anode current
85 A
Application
battery charging and cinema rectifier service
Heater voltage
2.5 V
DirectAC
Heater current
27 A
DirectAC

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Construction

Filling
Mercury vapour and gas

Other

Maximum RMS input voltage
85 V RMS
Minimum RMS input voltage
20 V RMS
Peak inverse voltage
275 V
Maximum average current
15 A
Maximum peak current
85 A
Minimum series resistance
0.3 ohm
Condensed mercury temperature range
30-80 degC