Tube-number record
11CY7
0 archive entries
11CY7 is a tube type in the TubeDatabase archive (class: Dissimilar Double Triode). Recorded specifications: brand Tung-Sol, year 1957, construction Dual triode, base Small Button 9 Pin, socket Noval (B9A), maximum plate voltage 450 V, and maximum plate dissipation 5.5 W. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassDissimilar Double Triode
BaseNoval (B9A)
Filament11 V @ 450 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Base MaterialSmall Button 9 Pin
Sections2
Filament / Heater
Heater NotesCoated Unipotential Cathode; Controlled Heater Warm-up Time
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Section 1 (Oscillator) | 250 V | 1300 | 52000 | 68 | 1.2 mA |
| Section 2 (Amplifier) | 150 V | 5400 | 920 | 5 | 30 mA |
| Section 2 (Zero Bias) | 60 V | — | — | — | 80 mA |
Application Notes
Intended for use as combined vertical-deflection oscillator and amplifier in television receivers.
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