F0rmatR said:Well here we go.. attached is what I am working with. It uses a flyback to get the high voltage needed to produce ozone, 5KV approx at lowest setting.
As you can see it uses a motor speed control to change the output of the step down transformer. The 2k pot once set is not touched. By changing the values of R1 and R2, can we make this circuit get the same results by using an ignition coil instead of the flyback? I am thinking the mosfet won't handle the curent needed to get the ign. coil fired and there is not enough from the transformer to do the trick either.
This unit draws less than 1 amp. But will the ign. coil work?
hope i can attach a file. it is freehand but i think it will give you an idea what i am trying to do..
Yes, if the circuit works with flyback, it will work with ignition coils.
The main problem there is the frequency. Common ign. coils (the ferrosilicon core ones) do not have response on frequencies higher than 5kHz, 10kHz (maximum).
But if you adjust the frequency to a lower one, it will work.
Just some things I think:
1 - Supply the 555 with 5V, when I use the 555 with 12V it gets hot.
2 - You should take out that 110k resistor from PIN 5. (Does that have any purpose?)
3 - It's better to parallel 2 or more NTE2397, according to the datasheet it has 125W of power dissipation and it is not enough to run a ignition coil at 26V.