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Diy audio tube PSVANE KT88-T MK II Premium Grade Vacuum Tubes KT88 DIY parts

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.

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
Rg1 
with cathode bias                                               
Pa+Pg2≤35W 0.47 MΩ 
Pa+Pg2 > 35W 0.27 MΩ 
with fixed bias
Pa+Pg2≤35W 0.22 MΩ 
Pa+Pg2 > 35W 0.10 MΩ