Self Running Micro TPU, with closed loop.

[sm0ky2]

this looks like a "prank" PM device we made in college.

we designed it to pick up the EMF from the electrical wiring in the building, to light up a few LEDs and turned a motor/fan

[magpwr]

Hi @All,

I know it's almost Christmas.

To @Groundloop and @plengo

I have discovered a site that uses mosfet for a Crystal Radio which doesn't requires antenna(Yep no Antenna it's optional and  no batteries needed).

I think this project is almost similar to the link below. Especially the 2nd Circuit diagram using mosfet in place of crystal.

http://www.arrl.org/qst/2007/01/culter.pdf

[Groundloop]

[EDIT] Deleted.

[hakware]

@groundLOOP

sorry about the nick.

Your quite right, we try to improve on things, so much so that we might break things in the process. at any rate my circuit is the same as yours except the transistor is the 2N3905 and I am using an IRF740 and 3 UV LED's. I am using a dead alkaline battery at the moment which I pulled out of the drawer at 4.3V. it is now at 6.25V after 6 hours on circuit. 
Im going to build a couple more and try 3 lithium button cells as well as a ni-cad just to see what happens on each type.

[hakware]

Hi @All,

I know it's almost Christmas.

I have discovered a site that uses mosfet for a Crystal Radio which doesn't requires antenna(Yep no Antenna it's optional and  no batteries needed).

I think this project is almost similar to the link below. Especially the 2nd Circuit diagram using mosfet in place of crystal.

http://www.arrl.org/qst/2007/01/culter.pdf

Strange I did not even see that and I get that magazine I will have to order some of those fets and try them out, but I dont exactly see the relation here as that circuit the Fet biasing is different and an alternative to a 1N34 germanium type diode. (although a heck of a lot more efficient.
Neat idea though.