Preamps
5881: beam power tetrode 5881, the anode limit dissipation power is 23W. It can be used in audio amplifiers for A1, AB1, AB2 amplification, and can also be used in voltage stabilization circuits. 5881 is similar to 6L6G, 6L6GA, 6L6GB, 6L6GC, etc. and can be interchanged.
Push-pull AB1 type amplifier transistor connection (fixed bias)
Ua.g2(0)400V
-Ug1(approx.)45V
Ions
üg(g1-g1.pk) 90 V
Current value
Ia (maximum signal) 130 mA
Pout 13.3W
Total 4.4%