Schematic diagram is show above as Single Ended Amplifier with UL
As you know EL86 of name of American is 6CW5.very similar physic with EL84/6BQ5.
EL86/6BQ5 is high plate voltage low current and high plate load. but EL86 is max 200V +B for plate
voltages.EL84 is 5K ohm and EL86/6CW5 is around 2.5K for plate impedance to use.
Ip-Ep charactor indicated next...
Charactor of EL86 ,Screen is 200V setup
EL86 Single Ended Amplifier with UL on May 2012
can use low plate voltage less than 200V just not same as EL84.
so a little bit difficult to use regurar power transformer.I have to use 70mA and 170V Ep.
control grid voltage is 12.5V .
................................to be continue..............