UU9

Indirectly heated full-wave rectifier for parallel-heater electronic power supplies. Its 6.3 V heater-cathode construction provides moderate current for receiver, amplifier, and general-purpose DC supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 630 mA

Description

Indirectly heated full-wave rectifier for parallel-heater operation.

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: 6.3 V
Nominal heater current: 630 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 nominal output current: 90 mA

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 90 mA

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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Maximum RMS anode voltage per anode
350 V

SECTION 2

Rectifier

Other

Maximum RMS anode voltage per anode
350 V