- Factory matched pair - 2 tubes.
- Type: KT88-TII power tethrode
- manufacturer: Psvane Audio Lab. CHANGSHA HENGYANG ELECTRON CO, LTD
- Serie: Psvane Treasure Mark II
Description#
KT88-TII is a beam power tetreode, its anode limited dissipation power is 42W. In the audio amplifier, the power can be 100W when it is used as push-pull class AB1 with double tubes, it can also be used in electronic voltage regulator circuit. KT88-TII is similar with CV5220 and 6550,they can be replaced by each other.
Parameters
Heater
Uf: 6.3 V
If: 1.6 A
Maximum Rating
Ua : 800 V
Ug2 : 600 V
Ug1 : -200 V
Pa : 42 W
Pg2 : 8 W
Ua+g2: 46 W
Ik : 230 mA
Uh-k : 200 V
Tbulb: 250 C
Direct Interelectrode Capacitances
tetrode connection triode connection
input: 16 9.3 PF
output: 12 17PF
grid to plate: 1.2 7.9 PF
tetrode connection：
Ua: 250 V
Ug2: 250 V
Ia: 140 mA
Ig2(approx): 3 mA
-Ug1(approx): 15 V
Gm: 12 mA/V
ri: 12 KΩ
Ug1-g2: 8
ri: 670 Ω
u: 8
triode connection：
Ua.g2: 250 V
Ia+g2: 143 mA
-Ug1(approx): 15 V
Gm: 12 mA/V