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If someone can cope with Iout = 5mA for a specific application, the Exar chips are quite nice. I use the XR2206 for sines.
There is certainly better ones like MAX038 but for the price, the do the job okay.
Together with an OP-Amp they can be sufficient.
i think that Heins work is not just about closing loop of magnetic flux but ist about interaction of high voltage coil and low voltage coil on the same core something is going on out there....
i have watched closely his bi-toroid videos and found that there are red windings and green winding at the same place in core!!! there have to be some interaction ..... maybe thats how he achive putting voltage out of phase .... its sould be called alternating voltage not current!!!!!
well this days we have alternating voltage not current in our home plugs!!!!
I think it may be related to shifting magnetic Bloch wall in space.For example low voltage is producing magnetic field while HV pulse makes it wobble.If then AC produced in coil is added to original DC low voltage current then magnetic field is a bit stronger and wobbling produce a bit more current and so on...
i think that Heins work is not just about closing loop of magnetic flux but ist about interaction of high voltage coil and low voltage coil on the same core something is going on out there....
i have watched closely his bi-toroid videos and found that there are red windings and green winding at the same place in core!!! there have to be some interaction ..... maybe thats how he achive putting voltage out of phase .... its sould be called alternating voltage not current!!!!!
well this days we have alternating voltage not current in our home plugs!!!!
wojsciech
in our home plug we have alternating voltage with current...
i think this have nothing to do, since the process can be reversed, i dont really believe that you need alternating voltage neither, in one of the videos you see that the primary have low resistance, and is being powered with only 2 or 3 volts but with a lot of current, 2 amps...
if you connect a low resistance coil to the load you you will get very low voltage but higher current, if you connect a coil with a little more resistance compared with the primary to the load, you will get more voltage that the input and the amp draw to the primary should decrease, if you connect an high resistance coil to the load, you will get lot of volts, and the voltage to the primary should decrease..
wojsciech you dont have to make a complete copy, who knows you dont discovery something new by experimenting?
the trick is not in the coils, you can use different sizes to compare output! try to wound 100 turns on the primary, and see the output you get with a 20 turns secondary...
high voltage input = big primary, low voltage input = small primary
i think the trick is in the frequencys and in the power factor input.
I have seen some results with my setup by sending 4.5 V dc 55Hz to the primary, with a more turns smaller gage secondary i get 30Volts without load, but only 0.5V onload, the strange thing is that i can light a led, so my multimeter clearly cannot read right values. When i connect the load e get 20 mA in the load, and the current to the primary decrease from 100mA to 80mA. I have to find some old cheap osciloscope for sale for good measurement.
but that is nothing new to me, with my JT setup my current to the primary will decrease when i put it on load.
The relation between voltage and current depends on resistance or impedance (resistance due to rate of changes in direction of the current (magnetized field) (frequency)).
For example you plug your transformer into the wall plug 220v. Lets assume that your transformer primary have 110 ohms of impedance at 60hz (impedance calculation for inductance reactance or impedance in ohms is = 2PI*Frequency*inductance in henries)
If you don't have a load connected to the secondary you have 2 amps flowing thru your primary. However as you don't have a load in your secondary you are sending almost all this 440 watts back to the line. Part of this 440 watts or 220v*2 amps is being consumed in your primary because of the ohmic real resistance of the copper wire by a factor = I^2*R ... The rest is only reactive power or more clearly it goes back to the line.
If you add a capacitor in parallel with your primary that have 110 ohms at the same frequency (impedance calculation for capacitance reactance or impedance in ohms is = 1/(2PI*Frequency*capacitance in faradays) ) You will have a perfect path for the power not used by the coil to go, instead of going back to the line. (it become a circuit in resonance) The amp draw from the line will be way lower than 2 amps (will be only the equivalent to the power being consumed in the wire resistance) while between the capacitor and the inductor you will still have 2 amps.
Doing this you will have a near perfect power factor device (seeing from the line) ( the power factor will still close to 0 between the cap and coil that is what we want because you are circulating energy between this components only back and forth)
Now the fact that you add a secondary in a common transformer will reduce its impedance in the primary raising the current being consumed from the line because power will be consumed by the load on the secondary.
In the case here you have an alternative path for the bemf like proposed by the patent it would allow you to connect the load while not reducing the impedance of the primary and still doing work.
So if our house electric plug have 220v, when we connect a load ( R ) 110 ohms we allow the current 2 amps to flow, and this current will flow accordingly to the rate of voltage unity per resistance or impedance in this case unity.
Is that clear enough?
you want low ohmic resistance on the primary and secondary and big reactance or impedance on the primary, this means many turns of wire and not to thin wire or you will have too much losses.
Guys I need to say, this idea is not allowing me to sleep, i close my eye and start seeing formulas and designs and it's being really strange. Really strange because even when i'm dreaming i keep my mind working on it.
I discovered the principle, the ideas is based on!
Think about a permanent magnet.
Everyone knows that a permanent magnet to become permanent magnetized, must be charged by a capacitive discharge or by a strong current pulse in a coil surrounding it. Ok here is the deal. Does not matter how many times you glue this permanent magnet and unglues it in a iron piece, it will not loose its ability to magnetize the iron and every time you glue it in an iron piece the magnetic domains of the iron piece will align becoming "part" of the permanent magnet.
A kind of resonance... if you compare with an electric guitar, when it's played unplugged you will only hear a very low volume sound, but if you touch this guitar on a door made of wood the sound will be way louder. The sound is louder and you didn't added more energy to it, you just allowed it to resonate with the wood. (same as tuning fork)
Ok the point i'm trying to arrive is, in a transformer we have an oscillating magnet that is quite efficient, and allow for the flux to change direction without moving parts, when we have a second (higher permeability) core close to it it will become magnetized almost for free like the example of the permanent magnet (the only cost will be the resistive losses of the copper). Now every time this magnetic field collapse you will create a pulse in the second core but this has small cost in energy depending on the wire and shape and materials of the core.
I was dreaming yesterday about a kind of shape and drive mean that would be excellent for explore this effect at the max. You would need two primaries where current passes unidirectionally in each one alternating 180° like half wave in each one. This can be done adding a diode in parallel with the coil and a full wave bridge driver. I believe that the bigger the better, wire mm to avoid losses and core size to allow higher inductance resulting in higher voltage lower current operation. (low saturation !!! very important!!!) It should be tri-toroidal one primary on two of them and each side with a secondary sharing a central high flux ultra high permeability core in the center.
the key would be to have primary reluctance so high that bemf will avoid going thru, and secondary coil reluctance so low that bemf will easly go thru...
wojsciech
ps. im waiting for fe2o3 (powder iron) to make this 2 cores from the same material but different diameters (cores area)
hehe i just figured out why my transformer dont work like it supose to !!!
primary core sould have at least 10 times more reluctance (flux resistance) than secondary!!!
i think that when i get the powder iron and make primary 10 times smaller than secondary it will work !!!
ok i have my Fe2O3 powder and i have to say its not working at all
magnet just dont do anything to this powder so it dont make sens for me to go further!!! i had better results with tonner powder!!!
im on a hunt for iron filings maybe this will work if anybody have expirence in making cores please give advice !!!!
cheers
wojsciech
ok i did a research and found that soft iron is ok also so the easyiest way will be to do core from soft iron
i did 3 models with the same lenght of wire same magnet (29mm) and different core diameter and
for 12mm diameter core it gave me 150ma at 2v
for 16mm diameter core it gave me 200ma at 4v
for 23mm diameter core it gave me 250ma at 6v
SO SIZE DOES REALLY MATER
i just have to find out which type or soft iron works best and im done with the core, i guess high carbon will be the best but experiments will decide!!!
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