13FM7

Duodecar dissimilar dual triode designed for television vertical-deflection systems, combining an oscillator section with a low-mu power-amplifier section. Published ratings include 10 W plate dissipation and high pulse-voltage capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 12EJ
Socket code: B12C
Base pins: 12
Nominal heater: 13 V / 450 mA

Description

Duodecar type used as combined vertical-deflection os- wrlBw^v'I 11 and vertical-deflection amplifier in color and cillator ^\X-T\}r (TyXi - ^I^Tijo) i black-and-white television receivers. Triode unit No.l 7^sv /a\ yfiT) GT| GT 's use d as an oscillator, and triode unit No.2 is used "C Oj To) - T i as an amplifier. Outlines section, 8C; requires duodecar h h 12-contact socket. Type 13FM7/15FM7 is identical with 12EJ type 6FM7 except for heater ratings. 6FM7 13FM7/15FM7

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 12EJ
Socket code: B12C
Base pins: 12
Nominal heater voltage: 13 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

12EJ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 40000 Ω
Transconductance: 0.0015 S
Amplification factor: 60
Max plate voltage: 330 V
Max plate dissipation: 1.5 W
Max cathode current: 20 mA

high-mu

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 1000 Ω
Transconductance: 0.007 S
Amplification factor: 6
Max plate voltage: 330 V
Max plate dissipation: 10 W
Max cathode current: 50 mA

low-mu

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

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum Plate Voltage
330 V
Inherited from explicitly referenced parent 6FM7.
Plate Dissipation
1.5 W
Inherited from explicitly referenced parent 6FM7.

Characteristics

Plate Resistance
40000 Ω
Inherited from explicitly referenced parent 6FM7.
Transconductance
1500 µS
Inherited from explicitly referenced parent 6FM7.
Amplification Factor
60
Inherited from explicitly referenced parent 6FM7.

SECTION 2

Triode

Other

Maximum Plate Voltage
330 V
Inherited from explicitly referenced parent 6FM7.
Plate Dissipation
10 W
Inherited from explicitly referenced parent 6FM7.

Characteristics

Plate Resistance
1000 Ω
Inherited from explicitly referenced parent 6FM7.
Transconductance
7000 µS
Inherited from explicitly referenced parent 6FM7.
Amplification Factor
6
Inherited from explicitly referenced parent 6FM7.

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Grid-No
0.3 mA
Published value from supplied target entry
Grid-No.l-Circuit Resistance, for fixed-bias operation
0.5 megohm
Published value from supplied target entry
Heater Voltage (ac/dc)
13 volts
Published value from supplied target entry
Heater Current
0.45 amperes
Published value from supplied target entry
Heater Warm-up Time (Average)
11 seconds
Published value from supplied target entry
Plate Voltage
175 volts
Published value from supplied target entry
Grid Voltage
-25 volts
Published value from supplied target entry
Amplification Factor
5.5
Published value from supplied target entry
Plate Resistance (Approx.)
920 ohms
Published value from supplied target entry
Transconductance
6000
Published value from supplied target entry
Plate Current
40 mA
Published value from supplied target entry
Grid Voltage (Approx.) for plate current of
5.3 volts
Published value from supplied target entry
Grid Voltage (Approx.) for plate current of
200 mA
Published value from supplied target entry
DC Plate Voltage
500 volts
Published value from supplied target entry
Peak Positive-Pulse Plate Voltage*
1500 volts
Published value from supplied target entry
Peak Negative-Pulse Plate Voltage
250 volts
Published value from supplied target entry
Average Cathode Current
50 mA
Published value from supplied target entry
Plate Dissipation!
10 watts
Published value from supplied target entry