Preamps
Maximum Ratings
UA300V
Pascal 15W
A
The cathode bias voltage is 0.5 M
Fixed bias 0.05 M
Direct interelectrode capacitance
Input 7.5 PF
Output 16.5 PF
Grid spacing 5.5 PF
Static parameters
UA300V
-Ug45V
Current 60 mA
On-resistance 5.25 mA/V
0.8 thousand
Four point two
Output 3.5 W
Recommended operating conditions
(reference value)
Class A1, single tube (fixed bias)
250V
-Ug45V
Reflow 2.5k
Current (0) 60 mA
General 5.25 mA/V
0.8 K
Four point two
Output 3.5 W
Total 5 %
Category AB1
Push full (fixed deviation)
Voltage 300V
-Ug 62 Rk=780V
RL 3 5 thousand
üg (peak) 87 110 V
Current (0) 80 80 mA
Ia (maximum signal) 140 100 mA
Output power 15 10 watts
Total 2.5 5 %