[ARC5] A hardly relaxing oscillator

[Kenneth G. Gordon]

On 2 Feb 2015 at 10:54, bcarling at cfl.rr.com wrote:

> Hi Mike,
> 
> I wonder why there is a neon bulb on the transformer? Is it a pilot light? Or is
> it intended to oscillate?

Neither one: it is there to save the transformer from voltage spikes which can 
wreck it. 

It is there for the same reason that neon bulbs are connected from the 
antenna input to ground in some rigs.

Ken W7EkB