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Rectifier - Damper Diode ·Rectifier

U191

Television booster diode for horizontal line-output and flyback energy-recovery service, designed for high inverse voltage and repetitive current in series-heater receivers.

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

Description

Efficiency diode for television receivers with series-connected heaters.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
-
Nominal heater voltage
19 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
Rectifier peak inverse voltage
4500 V
Rectifier nominal output current
150 mA
Rectifier peak forward current
450 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

Characteristics

  • Design-centre peak inverse voltage

    4.5 kV

  • Anode-heater-cathode capacitance

    7.7 pF