Test Results
1. Initially I have used relays instead of MOSFET. And relays worked for few seconds during this battery voltage raised to 12.41V from 12.37V.
2. Now I am having isolated power supply for mosfet drivers.
3. Batteries used are 12V 65Amps.
4. Transformer is 5Amps 12Volts for inverter.
5. CFL 15Watt as load.
6. It works like efficient inverter.
7. Battery drain is observed with MOSFET circuit, (relay circuit dosen't work more than few seconds.)
8. Battery voltage drops 0.03Volts per hour with 15Watt CFL.

Please suggest some thing.... (no limit less power )

This is my first post, that is because I am not smart enough to know, what to ask, but I have a program that helps me with circuits and run them on the computer.  It is called Electronics Workbench it is from Interactive Image Technologies Ltd. In Canada.  It is like using a test board but not making all those connection and changes.  It also lets you turn the the test on and see what is happening.  I haven't been able to simulate a spark but I am sure there is something would work in it. I just thought that I would share this information with you all because your wellness to share is amazing that in this day and age their are still great people out there that are more interested in the helping than making the all might dollar.

Now, it has a new symptom...
The plasma wont spark if the engine is lower than 2500rpm.. This mean, it only sparking normal spark...  Shocked


I think you are experiencing dynamic compression reduction. In other words, below 2500 RPM on your engine, the energy required to create the "explosion" is greater than you are providing. To confirm this:
1. Loosen the spark plug at start-up until you hear a "squishing" sound, when turning the engine over.
2. Connect the ignition system and start the engine.
3. DON'T rev. the engine with the loose plug. You could strip the threads.

If the plasma fires at start-up, you will have to increase the discharge of the spark for it to work <2500 RPM.

Rgds.
D

Quote from: Dread on September 06, 2008, 07:57:09 AM
Now, it has a new symptom...
The plasma wont spark if the engine is lower than 2500rpm.. This mean, it only sparking normal spark...  Shocked
I think you are experiencing dynamic compression reduction. In other words, below 2500 RPM on your engine, the energy required to create the "explosion" is greater than you are providing.
If the plasma fires at start-up, you will have to increase the discharge of the spark for it to work <2500 RPM.

high voltage travels easily in vacuum, Under pressure you need more voltage on plug to get it work.....

Consider that in a DIS ignition system, half of the pulses are positive and the other half are negative.  This could be the reason for the misfire.  Positive pulses require more voltage to bridge the gap than negative ones do.