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UR1C

Indirectly heated half-wave rectifier for AC/DC receivers and amplifiers using 200 mA series-heater chains. Its 20 V heater provides moderate current for compact mains-operated supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 20 V / 200 mA

Description

Indirectly heated half-wave rectifier with 200 mA series heater for AC/DC receivers and amplifiers.

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: 20 V
Nominal heater current: 200 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

Rectifier nominal output current: 75 mA
Rectifier max heater-cathode voltage: 350 V
Rectifier warm-up time: 70 s

Promoted values are mapped from the supplied datasheet; additional published ratings, characteristics, capacitances and operating points are retained in TUBE_SECTION_PARAMETER.

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 Mullard

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

RMS anode voltage maximum
250 V
HalfWave
Rectified current maximum
75 mA
HalfWave
Heater-to-cathode voltage maximum
350 V
Reservoir capacitance maximum
80 uF
NoSeriesAnodeResistance

Characteristics

Heating time
70 s