EL509
EL509 is High Performance Beam Power Tetrode manufactured by Unknown Manufacturer.
features
: Increased peak cathode emission from new cathode materials; Stable operation from extended processing and aging; Gold-plated grid; Precise grid/screen alignment; Extraheavy glass envelope for ruggedness; Improved vacuum processing; prehensive testing before and after aging. The Svetlana EL509 is manufactured in Russia at the Svetlana factory and is designed to be a direct replacement for any 6KG6 or EL509. The strict manufacturing and quality controls at the Svetlana plant assure functionality and long life.
Electrical Heater
Voltage(AC,DC) Current Transconductance(nominal)
Plate resistance(nominal)
Interelectrode capacitances(typical): Grid to cathode Grid to plate
Min Nom 5.7 6.3
Maximum Ratings DC plate voltage DC plate voltage, pulsed Grid2(screen) DC voltage DC cathode current Plate dissipation Grid2 DC screen dissipation
Typical Operation
Audio Amplifier, Class A1 (single tube)
DC plate voltage
Grid2(screen) DC voltage
Grid1(control) voltage
Peak grid drive
Zero signal plate current
Max signal plate current
Effective load resistance
Distortion at 1 watt into 8 ohms
Output power at 5% distortion
Max 6.9
18,000 8,000
V A μS Ω
25 p F 2.5 p F
900 8,000
300 500
35 7
V V V m A W W
500 280 -82
50 70 100 1,650
0.9 14
V V V VP-P m A m A Ω
%...
