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6BE7

Seven-grid tube for combined limiting and frequency-discriminator service in FM receiving circuits, integrating nonlinear limiting and FM detection in one specialized structure.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: NOVAL
Socket code: B9A
Base pins: -
Nominal heater: 6.3 V / 300 mA

Description

Seven-grid tube designed for FM limiter-discriminator service. Published ratings, characteristics, capacitances, and representative operating conditions were extracted from the approved manual page where available.

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: NOVAL
Socket code: B9A
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

NOVAL - 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

Other

X-ray radiationInterelectrode capacitances

Plate resistance: 5000000 Ω
Max plate voltage: 250 V
Max screen voltage: 100 V
Max plate dissipation: 0.1 W
Max screen dissipation: 0.1 W
Max cathode current: 5 mA

Seven-grid tube designed for FM limiter-discriminator 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Other

Plate voltage
250 V
FMLimiterDiscriminator; OperatingPoint1
Screen voltage
205 V
FMLimiterDiscriminator; OperatingPoint1
Control-grid bias
4.45 V
FMLimiterDiscriminator; OperatingPoint1
Plate current
0.28 mA
FMLimiterDiscriminator; OperatingPoint1
Screen current
1.5 mA
FMLimiterDiscriminator; OperatingPoint1
Plate resistance
5000000 ohm
FMLimiterDiscriminator; OperatingPoint1
Load resistance
470000 ohm
FMLimiterDiscriminator; OperatingPoint1

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Other

Characteristics

Heater voltage
6.3 V
Heater current
200 mA

Other

FM detector plate supply voltage
250 V
FM detector plate load resistance
0.47 Mohm
FM detector grid 3 input voltage
12 V RMS
FM detector grid 5 input voltage
12 V RMS
FM detector phase angle
90 deg
AF amplifier plate supply voltage
250 V
AF amplifier output voltage
15 V RMS
AF voltage gain
50