Joule Thief

[xee2]

@ Pirate88179

Xee2:

Or inductor?

Bill

I do not understand what you are asking. But if the antenna is connected to a very high Q resonant parallel LC circuit the voltage at the resonant frequency can be multiplied many times. This is why these are used at the input of radios. However, even though the voltage is increased there is no net power increases. The effect much like charging a capacitor. The voltage on the capacitor increases but that is only because it is summing the power over a period of time. The net power does not increase, but it is stored and them used over a short period of time so that more is available during the short time it is used. If that makes any sense to you.

[kooler]

lets say we or someone builds a unit that does indeed put out more amp than in ...
how we go about feeding back to charge a cap if the output has amp plus some spikes
regulator or resistor to cap ??

just wondering...

[crowclaw]

lets say we or someone builds a unit that does indeed put out more amp than in ...
how we go about feeding back to charge a cap if the output has amp plus some spikes
regulator or resistor to cap ??

just wondering...

It depends on what you want to do with the voltage you have created. You first need to isolate it in such away that it can be stored or used, and not leak back into the circuit that created it. The most common method is to use a blocking diode which is forward biased when a positive voltage or positive signal pulses are applied to it's anode. The cathode connects to either some form of regulator circuit or storage device i.e. battery or capacitor. The diode will not return the stored energy back to the circuit that created it. Over a period of time your cell(s) or capacitor(s) will charge to a degree that will enable you to make use of it.

merv

[innovation_station]

just popping in to say hello to all ...

im still round ...  just winterzing ma tent at the beach

i hope to be back to work in the new lab soon ...

hopeing gadget might read this... 

i need to buy a FEW SUPER CAPS FROM HIM ...

of course i have come up with a million more ideas since i last stopped by overunity.com ...

but i need a warm lab to build all  winter in ..

and it is almost done ... 

see ya soon in the new lab..

ist!

ps gadget i need caps lets work a deal ...  2vdc 50 + frad x6 for 12vdc ... there bouts ... 

[spinner]

@ All.

Hi Guys, I find your work fascinating. I am an electronics engineer and have been experimenting on similar projects involving inductive power transfer. Just a word on suspended plates and antenna's. If you can suspend metal sheet plates, they will need to be well insulated of course. (glass is an excellent insulator) you have in affect a capacitor which will hold a static charge. The dryer the air the better, which becomes charged with +/- ions. Charged voltage can be quite high depending on several factors. The problem is the discharge currents are very low. This also applies to Antenna receivers and earth batteries that you are currently experimenting with. It's working towards gaining useful current of course well above just a few milliamps that we really need to achieve. If you are experimenting with long antenna's with resonant circuit components you are most likely receiving RF or 50/60Hz line buzz as already suggested. I'm probably mentioning ideas and suggestions that you are all familiar with  through your experiments. You can substantially increase a voltage across a coil winding by adding more turns, the down side is that more turns increases the DC resistance which reduces the available current! likewise fewer turns reduces the voltage but increases the current. Consider how an AC power transformer works and the ratio of it's windings. The primary matches the line input voltage and may have a resistance of several K with many turns, were as the secondary could have far less turns with a lower resistance of just a few ohm's but may be capable of delivering a few amps at a relatively low voltage, compared with only perhaps a few hundred milliamps drawn from the secondary winding. This is our goal, real useable power. Voltage combined with higher current. V x I = Watts.
Sorry rather long... keep up the good work.

Regards

Fascinating.. The "Jule thief" became a nr.1 thread in the OU site!
Congrats, Pirate!

So, what is the current level of achievements here?
Thanks!