Preamps
Performance parameters
Filament voltage (Uf) = 6.3V;
Filament current (If) = 1.6A;
Anode voltage (Ua) = 250V;
Anode current (Ia) = 145 mA;
First gate voltage (Ug1) = 14V;
The second gate voltage (Ug2) = 250V;
Second gate current (Ig2) = 20mA;
Transconductance (S) = 11mA/V;
Internal resistance (Ri) = 12k.
(Restricted data)
Maximum anode voltage (Uamax) = 600V;
Maximum second gate voltage (Ug2max) = 500V;
Maximum cathode current (Ikmax) = 230mA;
Maximum anode dissipation power (Pamax) = 42W;
The maximum power dissipation of the second gate (Pg2max) = 8W;
Maximum first gate resistance (Rg1max) = 270k for self-bias voltage, 470k for output power below 35W
When the bias voltage is fixed at 100k and the output power is below 35W, the output power is 220k.