The neon and the light bulb doesn't light.
My main question is... the transistor is necessary? or it's optional? The original picture, it's without the transistor, but my friend told me that I need to put the transistor.
The problem seems to be in the transformer.
I have removed the transistor and the 470 ohm, and I have connected directly to the transformer.
I cannot light any light bulb in the output of the transformer. But the square wave pulse works good because If I connect a little 12 Volts light bulb to the output of the oscillator (555), it lights. But when I put the transformer, the light bulb doesn't lights.