6AD10

Combination beam-power and sharp-cutoff pentode designed for television FM detection and audio-frequency output service, integrating detector and power-amplifier functions.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 12EZ
Socket code: B12C
Base pins: 12
Nominal heater: 6.3 V / 1.05 A

Description

Combined beam-power and sharp-cutoff pentode for FM detection and audio-frequency output service in television receivers.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 12EZ
Socket code: B12C
Base pins: 12
Nominal heater voltage: 6.3 V
Nominal heater current: 1.05 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

12EZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Pin 1	—	H — Heater	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN2Pin 2	B	K — CathodeGroup EZ2	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN2Pin 2	B	SH — Internal ShieldGroup EZ2	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN3Pin 3	B	G1 — Control Grid	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN4Pin 4	—	NC	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN5Pin 5	B	G3 — Suppressor Grid	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN6Pin 6	B	G2 — Screen Grid	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN7Pin 7	B	P — Plate (Anode)	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN8Pin 8	A	G1 — Control Grid	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN9Pin 9	A	BP — Beam-Forming PlateGroup EZ9	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN9Pin 9	A	K — CathodeGroup EZ9	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN10Pin 10	A	G2 — Screen Grid	Verified GE 12AE10 terminal connections 12EZ, 1968
PIN11Pin 11	A	P — Plate (Anode)	Verified GE 12AE10 terminal connections 12EZ
PIN12Pin 12	—	H — Heater	Verified GE 12AE10 terminal connections 12EZ

Section ratings

2 physical sections, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 100000 Ω
Transconductance: 0.0085 S
Max plate voltage: 275 V
Max screen voltage: 275 V
Max plate dissipation: 10 W
Max screen dissipation: 2 W

Beam-power section used as an audio-frequency output amplifier.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 110000 Ω
Transconductance: 0.0034 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 1.7 W
Max screen dissipation: 1 W

Sharp-cutoff pentode section used as FM detector; plate maximum is represented by the published detector-service supply/rating table where the plate-voltage row is OCR-damaged.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Plate Voltage
250 V
ClassA;Section1
Grid No.2 Voltage
250 V
ClassA;Section1
Control Grid Voltage
-8 V
ClassA;Section1
Zero-Signal Plate Current
36 mA
ClassA;Section1
Maximum-Signal Plate Current
39 mA
ClassA;Section1
Zero-Signal Grid No.2 Current
2.5 mA
ClassA;Section1
Maximum-Signal Grid No.2 Current
7 mA
ClassA;Section1
Load Resistance
5000 ohm
ClassA;Section1
Maximum-Signal Power Output
4.2 W
ClassA;Section1

SECTION 2

Pentode

Characteristic

Plate Supply Voltage
150 V
ClassA;Section2
Grid No.2 Voltage
100 V
ClassA;Section2
Cathode Bias Resistor
180 ohm
ClassA;Section2
Transconductance Grid No.1 to Plate
3400 uS
ClassA;Section2
Transconductance Grid No.3 to Plate
600 uS
ClassA;Section2
Plate Current
3.2 mA
ClassA;Section2
Grid No.2 Current
3.2 mA
ClassA;Section2

Other

Grid No.3 Negative Bias Maximum
100 V
FMDetector;Section2
Grid No.3 Positive Bias Maximum
25 V
FMDetector;Section2