URGENT! WATER AS FUEL DISCOVERY FOR EVERYONE TO SHARE

[jibbguy]

Double Post

[Dmoney]

Luc,

Over a WaterFuel1978, they all seem to have an isolating transformer to protect their inverter.  Can you add an isolating transformer to you diagram?

Darren

[wavez]

Where does one get an isolating transformer, and which model should a person use for this? I think Luc's current design eliminates the need for it because the inverter is not in the circuit when the relay switches.

[bumfuzzled]

Has anyone acces to a very high speed camera? Would be cool to see the spark at 1000fps.

I'd like to see one in a water engine combustion chamber. I've seen them in gasoline motors before, pretty cool.

[Shanti]

Over a WaterFuel1978, they all seem to have an isolating transformer to protect their inverter.  Can you add an isolating transformer to you diagram?

I think Luc's current design eliminates the need for it because the inverter is not in the circuit when the relay switches.

An isolation transformer is usually just a 1:1 transformer to decouple two power systems. In the water group they do this to protect the inverter. In my opinion just a choke coil (maybe with a snubber cap or even a good transil diode) should suffice to get rid of the surge, and would mainly be much cheaper. The inverter is still needed for the LV. The inverter generates the 320Volts (rectified) from the 12V to charge the cap. So even if during the firing the inverter does nothing, prior to the firing the inverter charges the cap.

But it would be much more efficient to make an own LV circuit, because for this application (DC output) an inverter is actually quite the worst thing one could take, due to low frequency and sine signal. An Usual HF switched Power Supply, would be much more space efficient. But as it seems you can get them quite cheap, it will be easier that way. Here where I live one cannot get inverters so cheap...