1E3

Directly heated high-frequency medium-mu triode for Class A amplification in receiving and general small-signal electronic circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Description

Directly heated high-frequency medium-mu triode for Class A amplification.

Small-button Noval 9-contact

General specifications

Properties common to every published source and operating point.

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1P	A	P — Plate (Anode) EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN3G1	A	G1 — Control Grid EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN4H	—	H — Heater EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN5H	—	H — Heater EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN6G3	A	G3 — Suppressor GridGroup 9BG6 EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN6K	A	K — CathodeGroup 9BG6 EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN7G1	A	G1 — Control Grid EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG
PIN8G2	A	G2 — Screen Grid EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9BG

1 physical section, each with unique specifications.

Section 1

X-ray radiationInterelectrode capacitances

Values promoted only where clearly published for this section in the approved source.

Source-dependent data

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

Published operating points and test conditions from this source.

SECTION 1

Pilament voltage
1.25 volts
Published source value; see source line context.
Plate voltage max
150 volts
Published source value; see source line context.
Plate dissipation max
3 watts
Published source value; see source line context.
Cathode current max
20 V
Published source value; see source line context.
Grid voltage when grid current max. =
0.2 volt
Published source value; see source line context.
Filament voltage max
1.55 volts
Published source value; see source line context.
Grid voltage
-3.5 volts
Published source value; see source line context.
Plate voltage
150 volts
Published source value; see source line context.
Frequency
470 megacycles
Published source value; see source line context.
Out put
0.45 watt
Published source value; see source line context.
the filament voltage must be at least
1.1 volts
Published source value; see source line context.
Plate voltage =
150 volts
Published source value; see source line context.

Filament current
0.22 amp
Published source value; see source line context.
Grid current meX
5 ma
Published source value; see source line context.
Grid circuit resistance
1 megohm
Published source value; see source line context.
Plate current
20 ma
Published source value; see source line context.
Cathode current
20 ma
Published source value; see source line context.
Grid current
1.5 ma
Published source value; see source line context.
Cathode current =
20 amps
Published source value; see source line context.

Data set 02

Published operating points and test conditions from this source.

SECTION 1