VALVULA EL 34B SHUGUANG ELECTRON

Tetrode: EL34-B

DESCRIPTION

Plate power dissipation of EL34-B can reach 30W, whereas EL34A is 25W. EL34-B belongs to tetrode

tube compared to pentode tude of EL34A. g1 and g2 of EL34-B is not exactly aligned opposite to each

other and it is used in linear power amplification.

SPECIFICATION

Filament Heating

UH………………6.3V

IH………………..1.5A

Maximum Ratings

Plate voltage……………..800V

Second grid voltage…………..500V

First grid voltage……………..-100V

plate power dissipation………….25W

Second grid power dissipation……8W

Cathode current………………….150mA

First grid resistance

For selt-biasing………………..0.7MW

For fixed-biasing………………0.5MW

Filament voltage between cathode…………100V

Temperature of glass

envelop………………250 oC

Capacitances

Input capacitance………………..15.2pF

Output capacitance……………….8.4pF

Muller capacitance……………….1.1pF

First grid-heater capacitance……..1.0pF

Heater filament capacitance……....10pF

DC Parameters

Ua………………250V

Ug2……………..250V

Ug3………………..0V

-Ug1…………….12.2V

Ia……………….100mA

Gm……………..11mA/V

ri………………..15kW

ug1-g2…………..11