PWM v2.1 design by Zero Fossil Fuel
Has anyone built the PWM v2.1 by Zero Fossil Fuel? If so what was your experience with it? I have started to go over his design and I will be working on it over the next week or so to get it going. I have just joined this forum also so just asking if anyone has built out his design and any problems you may have experienced with it? Also looking for anyone in south fla that is into hho development.
Duel MOSFET Wiring Question
Gotcha... This is my first build of a PWM and I am a newbie to electronics. I definately see the advantage of PCB's at this point. I am not sure how to hook up the dual fet, but I will google it to see what I can find. If you have any info on that you can share I would be greatful. I will go the duel fet approach, I just have to do a bit of research to figure it out. The HHO cell I built works quite well. I have disassymbled it until I get this PWM going. One thing I want to change about the cell design is that I want to alter it a bit to split the hydrogen and oxygen into separate streams. Anyway, one thing at a time, the PWM is quite a little project.
Photos Request and Question...
Shane,
Could you send me the photos of the design you had again? I hate to ask, but I seem to have deleted your email by mistake. I just got new MOSFET's and I have tested that they work well. I was also able to get the preferred IRFP064N this time. I would like to try and complete the PWM this week. I am learning a lot about electronics as I go along with this project. One question I have is regarding the Quad Op-Amp LM324N. Did you keep this part in the design you have or did you substitute it for something like an
LM311?
Thanks
Tim
Testing Gate Fluctualtion
Ok… I have taken this PWM on as a project to self build. This is my first ‘real’ electronics build so go easy… What I have built so far is basically two halves of the PWM. First half, is all of the parts mounted onto the circuit board. Second half, is all of the components not mounted on the ICB. The second half appears to work very well. I did change the configuration just slightly by adding a second MOSFET as recommended by one of the members in the forum. So I have a dual MOSFET setup. I am using a simple light bulb as my test load just to test this half of the circuit. It works as I would expect it to. When I charge the gate of the MOSFET (charging either one of the two MOSFETs works) the light turns on, when I ground the gate of the MOSFET the light goes off. Voltages look good. All seems good with this half of the setup.
The problem I am seeing is when I wire the circuit board (first half) to the second half, my light bulb stays on. It seems that my ‘gate’ connection from the circuit board is ALWAYS charged. Maybe that is ok? However when I turn any or all of the POTs I don’t see the bulb dimming which I thought would be the case?
My question is this… Is there a way to test that the POTs are really having any effect or maybe they are not working? For example (I have not tried this yet), if I use a voltmeter should I see a fluctuation in the circuit board ‘gate connection’ output?