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6CK6 — Power Pentode, Noval | Tubeofile
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6CK6
Power Pentode — Noval
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↗ TDSL
↗ Radiomuseum
Known Equivalents & Substitutes
EL83
6CL6
6GK6
CV2726
Similar Tubes (Not Drop-In Compatible)
6CH6
Brans lists as equivalent — similar power pentode
7AD7
Brans lists as equivalent — Loctal base version, not pin-compatible
EL803
Brans lists as equivalent
Electrical Specifications
Absolute Maximum
Anode Voltage (max)
Anode Voltage (max)
300
V
Anode Dissipation (max)
Anode Dissipation (max)
9
W
Screen Voltage (max)
Screen Voltage (max)
300
V
Typical Operating
Anode Voltage (typical)
Anode Voltage (typical)
250
V
Notes
The 6CK6 is a miniature power pentode with high transconductance (10000 umhos) in a Noval base. Muiderkring lists EL83 as European equivalent.
GE rates max anode dissipation at 9W, max screen voltage 300V, max plate voltage 300V.
Typical operation at Va=250V, Vg2=250V, Vg=-5.5V: Ia=36mA, Ig2=5mA, gm=10000 umhos, Rp=130kΩ.
Pin Layout — Noval
1
2
3
4
5
6
7
8
9
1
Grid 3 (Suppressor)
2
Grid 1 (Control Grid)
3
Cathode
References
https://frank.pocnet.net/sheets/049/6/6CL6.pdf
https://tdsl.duncanamps.com/show.php?des=6CK6
Grid 1 Bias Voltage
Grid 1 Bias Voltage
-5.5
V
Anode Current
Anode Current
36
mA
Screen Voltage
Screen Voltage (typical)
250
V
Screen Current
Screen Current
5
mA
Anode Resistance
Anode Resistance
130,000
Ω
Transconductance
Transconductance
10
mA/V
Heater
Heater Voltage
Heater Voltage
6.3
V
Heater Current
Heater Current
0.71
A
4
Heater
5
Heater
6
Grid 2 (Screen)
7
Anode
8
No Connection
9
Internal shield