Amplifiers
1pcs FU-7 Vacuum Tube Valve Lamp Replace 807 FU7
Uh---------------------6.3 V
Ih----------------------0.9 A
Maximum Rating
Anode-----------------600 V
Grid No.2-----------300 V
Anode Disspation---------25 W
Grid No.2 Disspation--- 3.5 W Max Cathode----------120 mA
Heater-Cathode------±135 V
Operating--------------60 MC
Grid No.2 Resistance for fixed-Bias -----------0.1 M
Bias --------------0.1 M
Interelectrode capacitance
Input----------12 PF
Output---------7 PF
Transfer Capacitance 0.2 PF
Static parameter
Ua----------300 v
Ug2---------250 v
-Ug1--------12.5 v
Ia----------83 mA
Ig2---------8 mA
Ri----------24 k
Gm----------6.5 mA/V
Pout--------6.4 W
Dtot--------6 %
Operation conditions(for reference)
Single valve Class A1 Amplifier (Fixed Bias)
Ua----------300 500 v
Ug2---------250 200 v
-Ug1--------12.5 14.5 v
Ia----------83 50 mA
Ig2---------8 1.6 mA
Ri----------24 39 k
Gm----------6.5 5.7 mA/V
RL----------3 6 k
Pout--------6.4 11.5 W
Dtot--------6 12 %
Single Valve Class A1 Amplifier(Automatic Bias)
Ua----------300 500 v
Ug2---------250 200 v
Rk-------- 140 280
Ia----------83 50 mA
Ig2---------8 1.6 mA
Ri----------24 39 k
Gm----------6.5 5.7 mA/V
RL----------3 6 k
Pout--------6.4 11.5 W
Dtot--------6 12 %
PUSH-PULL AF POWER AMPLIFlER - Class AB1
Ua----------------500 600 v
Ug2---------------300 300 v
-Ug1------------Rk=270 27.5 v
Ia(0)-------------100 80 mA
Ia(max.sig)-------119 150 mA
Ig2(0)------------2.5 1.5 mA
Ig2(max.sig)------16.5 17.5 mA
-U(g1-g1.pk)-------72 59 v
RL(a-a)--------- -9 10 k
Pout-------------32.5 47.5 W
Dtot--------------2.7 2.2 %
PUSH-PULL AF POWER AMPLIFlER - Class AB2
Ua---------------------600 v
Ug2--------------------300 v
-Ug1-------------------30 v
Ia(0)------------------60 mA
Ia(max.sig)------------200 mA
Ig2(0)---------------- 1.5 mA
Ig2(max.sig)-----------21 mA
-U(g1-g1.pk)------------78 v
RL(a-a)---------------6.4 k
Pout------------------80 W
Dtot------------------3.5 %

High-concerned chemical : None
Channels : 1
Maximum Power Per Channel : 25 W