5 Watts in 60 Watts out ...

[DeepCut]

Hi all.

OK i've checked this over and over but, knowing me, i've probably missed something so please check these figures.

This is my crude replication of Toms device in this thread :

http://www.overunity.com/index.php?topic=9076.0

It's a standard Bedini circuit, i haven't added a relay yet as i want to prove the concept to myslf before maximising efficiency.

The drive coil is the usual bifilar, 800 turns of 0.30mm and 0.28mm.

The output coil is just over a kilometre (1145 metres) of 0.25mm magnet wire.


Input/output figures :


Output coil resistance = 388 Ohms

INPUT POWER: 18 Volts DC @ .280 Amps = 5.04 Watts

OUTPUT VOLTAGE : 155 Volts DC (Rectified)

OUTPUT CURRENT : 155 / 388 = 0.3994845360824742 Amps

OUTPUT POWER : 155 x 0.3994845360824742 = 61.92010309278351 Watts

Please advise if my calculations are wrong, i'm sure they're not as i'm more confident than i was when i joined this forum !

I'm now going to try and get it to run itself ...

Video :

http://www.youtube.com/watch?v=8R7ehAVnp8c


Gary.

[void109]

I dont think you're measuring your output current properly.  I believe you'd need to measure the voltage over a load of some sort, then you can calculate the current with voltage / resistance = current.  You're just measuring the output voltage with no load.

[DeepCut]

Thanks void.

OK i've done a proper load test.

My input resistance is 18 volts / 0.28 amps = 64 Ohms.

I put the nearest i had, 66 Ohms, across the rectifier output.

Results :

OUTPUT VOLTAGE : 138 Volts DC

OUTPUT CURRENT : 0.3994845360824742 (Calculated).

OUTPUT POWER : 55 Watts.

I remember mscoffman talking about the AC impedance of the output coil having an effect on this so i will now try to get the thing to self-run.

Looking good though ...


Gary.

[void109]

What kind of resistor are you using?  I assume its a heavy duty power resistor as 55 watts of power would turn a 1/4W-1W resistor into a molten pile of oops pretty quick

[void109]

I had to do a double take hehe, in your first post you had:

155 volts / 388 ohms = 399mA

in your reply you have:

138 volts / 66 ohms = 399mA, it should be 2.09A!  Giving 288.54W of power!

Are you measuring the 138 volts across the 66 ohm load?