R19

Brimar miniature directly heated high-voltage rectifier for television EHT supplies, providing approximately 25 kV peak inverse-voltage capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: -
Nominal heater: 1.25 V / 200 mA

Description

The BRIMAR R19 is a directly heated miniature high-voltage rectifier for television EHT supplies, rated to 25 kV peak inverse voltage and 2 mA DC anode current.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: -
Nominal heater voltage: 1.25 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 peak inverse voltage: 25000 V
Rectifier nominal output current: 2 mA
Rectifier peak forward current: 12 mA

Published ratings and characteristics promoted semantically from source; repeated identical physical sections compressed where applicable.

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

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Filament Voltage
1.25 V
Filament Current
200 mA
Anode-to-Filament Capacitance
1 pF
Approximate

Other

Peak Inverse Voltage
25000 V
Peak Anode Current
12 mA
DC Anode Current
2 mA