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I am using 2 pics (low power versions), 1 Real time chip, 43 High Brightness LEDs, 3 mosfets and 1 IR module. I figured it to be around 600 ma consumption but thats on paper. The LED's are only on (at not all at one time) for 1/2500 RPM. (estimate). Some are on (about 5) are all time.

1) The coil is on top of the other seperated by a 1/8" pc. of plastic. They are not necessarily flat but more like a thick rope shaped in a circle. 2) I didn't have a resistor on the secondary and I didn't think that putting a load on it would do anything towards the MOSFET getting hot but now...

I built a circuit to power the primary and it is driven by a 200Khz oscillator and then fed into a pair of transistors (PNP/NPN) and then fed into a 8A MOSFET. One end of the coil is wired directly to a 12vdc source and the other end is hooked to the MOSFET. The drain of the MOSFET is hooked to...

Yes I saw that and wasn't sure if he meant 20 turns or a ratio or 20 to 25. Like 100 turns to 125 turns. Also he lists how much current he is able to get from it and thats not enough for what I need. I need something like 600 ma on the secondary. I saw someone else make one and they did it a...

Would the output performance be any better if I was to just put 16v AC through the primary instead of pulsing DC? What kind of power output could I expect using that? I know its hard to measure but a range would be good enough for me at this point. Would increasing the current on the primary...

Thank you for the detailed suggestions. I am starting to mess around with it now and working on finding some sort of core to use on the secondary. I figured on using more turns also on the secondary to comepensate. I did a small test of 24 guage wire and used equally lengths and sent 12v through...

I was kind of looking for some technical help and not "go to the library" type help. Appreciate your time.

I was thinking of that but it would create alot of friction and noise.

Thank you for your input. I am posting a link where someone already has this idea working, they just don't give enough information as to the windings etc..and I need a little more power than he is producing: [url=http://www.geocities.com/tjacodesign/propclock/propclock.html]example[/LINK]

If you pulse DC into a coil you can make it produce electricity on the secondary wire. The trick is pulsing it, like 200Khz wave. I've seen it done, I just need to know how many turns for both sides would produce the output I need.

I am using DC 12v.

I need to make a air-core type transformer that can produce 6 volts DC (rectified) and at least 600 ma's. What I am doing is winding the secondary coil with 27 awg magnet wire with a diameter of 1" about 150 turns. The primary will be same wire but 100 turns and about 1 1/4" diameter. The...

Well I took it apart and I smelled the electrolyte up close and that is the source of the odor. I am going to replace it with a different type and try again...I will get back to you. Thanks!

Thanks for the info!! I wasn't sure about the cap myself but what you said makes alot of sense. I will swap it out and try that. Many Thanks!

Hello, I have a strange problem I am facing right now and maybe someone here can shed some light on it for me. I designed a rotating clock display that spins about 2000 RPM's and has LED's on it that turn on and off at a high rate of speed to give the illusion of digits in the air. The problem...