CV1040
Triode · DHT · UX-4 · 1940
“British military DHT.”
High-power directly-heated triode for single-ended amplification
Datasheet ↗SPICE
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
GAIN4%
POWER63%
DRIVE99%
LINEARITY95%
TYPICAL OPERATING POINT
EXECUTIVE SUMMARY
The CV1040 is a directly-heated triode from GEC/MOV, introduced around 1940. It provides a gain factor (μ) of 4 with 1330Ω plate resistance. Commonly used in power (set) applications. British military DHT.
APPLICATIONS
SET outputPush-pull outputHeadphone output
Generic triode power (set) stage
• Hi-Fi stereo• Headphone amp
HISTORY
Introduced1940ManufacturerGEC/MOVEquivalentsDA60
Pre-WarSPECIFICATIONS
Heater Voltage4V
Heater Current2A
Max Plate Voltage400V
Max Power25W
Sensitivity3 mA/V
Gain Factor4
Internal Impedance1.3kΩ
PinoutUX-4
Era1940
RarityRare