@insane4evr,

Thank you.

As I said, some small problems has to be solved.

I do not know if the 4047 IC has any dead time control. But I will look it up.

The circuit is making a LOT of noise when used directly on a car battery (or in my case, a lab supply).
So I will need a input filter for the unit. I'm working on that right now. Will post a solution
in a hour or so.

Groundloop.

Quote from: Groundloop on September 18, 2008, 02:19:23 AM
@gotoluc,

I have looked inside my ready bought Inverter (thus invaliding the factory guarantie).
For me it seems possible to both adjust the output voltage and also the frequency
to some extent (VR1, VR2). How much, I do not know. Attached is a drawing on how I think
this inverter works.

Groundloop.

Thanks Groundloop for looking into this further   Maybe what I can do is buy a 2nd one to experiment with since they are only $20. and crack her open and see if it has any pots and play around to see what happens.

Very clean job on you new inverter!

Luc

i saw that video and i was thinking of a video with showing engine that it works on water..(not stanley meyer).

@gotoluc,

Thanks.

Well I do not think the manufacturer will give us the circuit drawing so your
proposal is maybe the only way to find out what we could do with a ready
made inverter. What worries me more is the way those inverters are built.
The output from the inverter does not come directly from a transformer,
but is a chopped up DC voltage. It may be needed to check the polarity
of the output. I also do not know if the output fets will survive the first
ignition coil pulse before the ignition coil flips and the diode blocks
the high voltage. Only one way to find out, try it on a car.

Groundloop.

Impressive stuff groundloop, you work fast 

Just a quick question, Im looking for a cheap place to get a PCB done. I usually make my PCB at home, the artwork is done on protel/altium. Its the solder mask that really bothers me, its not easy soldering without solder mask on the PCB.

Did you do yours at home or did you get it made?

Im actually designing a CDI, based on 2 power MOSFETs + high side drivers + PIC + hall effects.

The advance/retard is controlled by the PIC on the fly up to +/- 30 deg. Mapping can also be added with ease.

Its only a test circuit at the moment, so far it seems to be working fine, still alot of coding and testing to do. Funny enough I got stuck in getting the tachometer part to work properly LOL.

Im not gonna bother with the inverter at the moment though. Im just gonna use what I already have.