Preamps
572B
Direct-heated cathode high-μ triode 572B, used for oscillation and power amplification in radio equipment.
Filament Heating
Voltage input
If ...............4A
Extreme Rating
Anode voltage 1250V
Anode current at maximum signal 210 mA
Anode power dissipation 125 W
Gate current 50 mA
Interelectrode capacitance
Input capacitance 6PF
Output capacitor 0.9PF
Inter-circuit capacitance 5.9 PF
Static parameters
UA 2000 V
2V
Current 32 mA
µ (when Ia = 20 mA) 190
Recommended use conditions (reference values)
Single-tube Class A1 amplifier (single-ended)
Emirates 750
30 Ug
IA(0) 130
Ia (maximum signal) 210
U(.pk) 60
Ia (maximum signal) 210
RL 5
Pout (when Dtot=5%) 40
Push-pull AB2 class amplifier
Emirates 1000
Ug 20
Lactic acid bacteria (0) 75
Ia (maximum signal) 300
U(.pk) 195
RL 8
Pout (when Dtot=5%) 150