Charge Battery From Capasitor.

[Groundloop]

@zerotensor,

Using only Neon bulbs in series is a bad advice with this circuit! The current through the bulbs will be to high for the gate on the SCR to survive in the long run. Resistors in series with the bulb will keep the current at a low state and thus protect the SCR.

>Watch out for sparks around lead-acid batteries, especially old and stressed ones.  >Hydrogen gas can escape and cause a nasty acidic explosion.

I agree with that, be carefull with sparks.

Groundloop.

[slayer007]

The capasitor I am using is 300v not 350v its a 4400 mfd
I have a few I could try the other two are 200v at 220uf Then 400v 120uf
Cool thanks for updating the pic.
And all your help guys.

[Groundloop]

@slayer007,

Then I will recommend using the 120 uf 400 volt. Better safe than sorry!

What are your input source?

Groundloop.

[zerotensor]

@zerotensor,

Using only Neon bulbs in series is a bad advice with this circuit! The current through the bulbs will be to high for the gate on the SCR to survive in the long run. Resistors in series with the bulb will keep the current at a low state and thus protect the SCR.

>Watch out for sparks around lead-acid batteries, especially old and stressed ones.  >Hydrogen gas can escape and cause a nasty acidic explosion.

I agree with that, be carefull with sparks.

Groundloop.

Quite right, GL.  I was just about to edit my post but you beat me to it.  I was conflating your circuit with a similar one that I once built, where the current was being dumped through the bulbs themselves.  Gave a pretty sine wave on the scope.

[Groundloop]

@zerotensor,

Yes I did try something similar. I tried to use a NE-2 bulb as a spark gap.
It worked, but only for a short time because the Neon gas got used up because
of too much current through the bulb. 

Groundloop.