Ampera
GU-50
Pentode · IHT · Special · 1955
“Russian 807 equivalent.”
Power pentode delivering up to 40W in pentode, UL, or triode mode
Datasheet ↗SPICE
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER100%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The GU-50 is a indirectly-heated pentode from Russian, introduced around 1955. Commonly used in transmitting applications. Russian 807 equivalent.
APPLICATIONS
Power output
Generic pentode transmitting stage
• PA/public address
HISTORY
Introduced1955ManufacturerRussianEquivalents807 class
Golden AgeSPECIFICATIONS
Heater Voltage6.3V
Heater Current2.5A
Max Plate Voltage800V
Max Power40W
Sensitivity6 mA/V
Gain Factor—
Internal Impedance—
PinoutSpecial
Era1955
RarityCommon
Input Capacitance12pF
Miller Capacitance0.15pF
Output Capacitance5pF