Hi Frank,

a very usable circuit – I found a not very good performing transistor block with this method – by the way…

I am am thinking on a special block with the HV transformer and a longer neon bulb, perhaps with a Fresnel lens (and a reflector ?)  for a better reading / viewing of the length / strength of the light as an indicator for the amplifier performance…

Let’s see what the next Corona days will happen 🙂 there is nothing to do else – so let’s work with Lectron!