6ME8

Specialized multi-electrode beam tube for color-television demodulation, switching, and coincidence gating. Balanced outputs and multiple control electrodes enable signal comparison and gating.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 300 mA

Description

Miniature type used for color-demodulator applications in color television receivers and a variety of other switching and gate applications. Outlines section, 6E; requires miniature 9-contact socket. Pin 5 should be connected directly to ground. The 6ME8 should be so located in the equipment that it is not subjected to stray magnetic fields. 9RU

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: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 300 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

BeamSwitchingCommutator

X-ray radiationInterelectrode capacitances

Plate resistance: 14000 Ω
Amplification factor: 58
Max plate voltage: 250 V
Max screen voltage: 300 V
Max plate dissipation: 2 W
Max cathode current: 30 A

Published promoted values applied where applicable; additional ratings, characteristics, and operating data retained as parameters.

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

BeamSwitchingCommutator

Characteristics

BALANCED OUTPUT
9
Published datasheet value; multiple values represent separate source-table limits or conditions.
Heater Voltage (AC or DC)
6.3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid No.1 to all except plates
7.5 pF
Published datasheet value; multiple values represent separate source-table limits or conditions.
Either plate to all
6 pF
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate No.1 to Plate No.2
0.4 pF
Published datasheet value; multiple values represent separate source-table limits or conditions.
both plates
4400
Published datasheet value; multiple values represent separate source-table limits or conditions.
+ plate-No.2 current)
14.5 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Grid-No.3 Current
0.7 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Plate-No.l Supply Voltage
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Supply Voltage
75 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Grid-No.3 Supply Voltage
350 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Grid-No. l Supply Voltage
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Cathode Resistor
390
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate-No.2 Current with (Edjl ) = 95 V
95
Published datasheet value; multiple values represent separate source-table limits or conditions.
Heater Voltage
6.3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Plate-No. I Supply 'Voltage
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Plate-No.2 Supply Voltage
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Grid-No. l Supply Voltage
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Cathode Resistor
390
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 3 -Grid No.3
3
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 4 -Heater End B
4
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 5 -Heater End A,
5
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 6 -Grid No.1
6
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 7 -Grid No.2, Cathode
7
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 9 -Plate No.1 — published value 1
9
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 9 -Plate No.1 — published value 2
9
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Plate Voltage, each plate
400 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC Grid-No.3 (Accelerating-Grid) Voltage Ec3
400 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Fo_Itive-bias vzl ~,~
0
Published datasheet value; multiple values represent separate source-table limits or conditions.
Heater Voltage (AC or DC) — published value 1
5.7 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Heater Voltage (AC or DC) — published value 2
6.9 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Average Cathode Current
30 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.3 Input
2
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Dissipation, each plate
2
Published datasheet value; multiple values represent separate source-table limits or conditions.
For fixed-bias operation — published value 1
0
Published datasheet value; multiple values represent separate source-table limits or conditions.
For fixed-bias operation — published value 2
1
Published datasheet value; multiple values represent separate source-table limits or conditions.
For fixed-bias operation — published value 3
1
Published datasheet value; multiple values represent separate source-table limits or conditions.
for cathode-bias operation — published value 1
0
Published datasheet value; multiple values represent separate source-table limits or conditions.
for cathode-bias operation — published value 2
25
Published datasheet value; multiple values represent separate source-table limits or conditions.
b Defined as the total voltage change from 75 volts n ei char deflecting
75 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate-current balance of the 6ME8. To minimize this effect, the
6
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE No.2 CONNECTED TO PLATE No.l 4T SOCKET
4
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID-No.3 VOLTS =3 S0
3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE-No2 VOLTS=250 — published value 1
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE-No2 VOLTS=250 — published value 2
30 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE-No.l VOLTS=250
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE-No.2 VOLTS=250
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE—No.IVOLTS=250
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE—No.2 VOLTS=250
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID—No.3 VOLTS=350
350 V
Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

Voltageb
30 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.2 voltage (Edj2) = 95 V — published value 1
95 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.2 voltage (Edj2) = 95 V — published value 2
1.3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

BeamSwitchingCommutator

Other

Heater Voltage (ac/dc)
6.3 volts
Published value from supplied target entry
Heater Current
0.3 ampere
Published value from supplied target entry
Plate Voltage (Each Plate)
400 volts
Published value from supplied target entry
Peak Deflecting-Electrode Voltage (Each Electrode) ±
200 volts
Published value from supplied target entry
Deflecting-Electrode Voltage (Each Electrode)
100 volts
Published value from supplied target entry
Grid-No
400 volts
Published value from supplied target entry
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 volts
Published value from supplied target entry
Cathode Current
30 mA
Published value from supplied target entry
Plate Dissipation (Each Plate)
2 watts
Published value from supplied target entry
Grid-No
2 watts
Published value from supplied target entry
Plate-No
260 volts
Published value from supplied target entry
Plate-No
250 volts
Published value from supplied target entry
Grid-No
350 volts
Published value from supplied target entry
Grid-No.l Supply Voltage
0 volts
Published value from supplied target entry
Deflecting -Electrode- No
75 volts
Published value from supplied target entry
Deflecting-Electrode-No.l Supply Voltage
75 volts
Published value from supplied target entry
Transconductance, Grid No.l to both plates
4400
Published value from supplied target entry
Total Plate Current
14.5 mA
Published value from supplied target entry
Grid-No
3 mA
Published value from supplied target entry
Grid-No.l Voltage for total plate current of
0.7
Published value from supplied target entry
Deflecting-Electrode Switching Voltage*
30 volts
Published value from supplied target entry
plate currents
0 volts
Published value from supplied target entry
Plate-No.l Current with Deflecting-Electrode-No.l Voltage =
55
Published value from supplied target entry
and Deflecting-Electrode-No
1.3 mA
Published value from supplied target entry
Plate-No
95
Published value from supplied target entry
Voltage =
0.04 mA
Published value from supplied target entry
Defiecting-Electrode-No
2
Published value from supplied target entry
* Defined as the total voltage change from
75 volts
Published value from supplied target entry
Heater Voltage
14.7 volts
Published value from supplied target entry
Heater Current
0.6 amperes
Published value from supplied target entry
Plate Voltage
250 volts
Published value from supplied target entry
Grid-No
250 volts
Published value from supplied target entry
Grid-No.l (Control-Grid) Voltage —
20 volts
Published value from supplied target entry
Grid-No
2
Published value from supplied target entry
Amplification Factor
58
Published value from supplied target entry
Plate Resistance (Approx.)
5000 ohms
Published value from supplied target entry
Plate Voltage
400 volts
Published value from supplied target entry
Peak Positive Pulse Plate Voltage#
2500 volts
Published value from supplied target entry
Grid-No
300 volts
Published value from supplied target entry
Peak Negative Grid-No.l Voltage
400 volts
Published value from supplied target entry
Plate Dissipation*
12 watts
Published value from supplied target entry