AreYouSure,
I did not say there was anything wrong with the principles you have shown. In fact I think that idea might be worth investigating. I was merely trying to point out that transistors are not a good fit for this project. Your relay idea is certainly worth trying to see if any current can be generated that way.
Good Luck,
Carroll
Actually I tried with reed relays first, but Floyd made his device with transistors,
so they should work.
He was driving his transistors with external driver, can not remember which type
was the driver, and driver and transistors are not the point.
Point was, and is how to harvest static magnetic field from magnets,
without moving parts.
I read the Floyds Nothing is something carefully and I was familiar
with slide wire generator principle from before and saw at which
concept Floyd was pointing.
Changing surface area of copper inside static uniformed magnetic field
was his point.
That is why he is having 2 coils inside magnetic field of magnet.
Shorting first and alternately second coil, he was getting effect
like the only one of the coils is present in magnetic field,
and alternately both of coils are present in magnetic field,
which results in induction in coils and current flow.
For the first time it is weird concept, but when you think
for a while, it becomes natural.
Read his Nothing is something and you will see for yourself
that
Floyd is circling around that idea of changing geometry,
or simpler said changing how much surface area of coils
are exposed to magnetic field without moving parts.
I used reed relays 200mA, 400V, can switch up to 400 Hz (1kHz?),
I drive it up to 400Hz, didnt try more,
and is isolating driver side from circuit, so driver side can not interfere
with scope shoots of circuit.
Reed relay 1KHZ_SIL05-1A72-71D , cheap one.
Can be drived directly from mosfet driver IR2110,
which I use.
Output of IR2110 through resistor 1kohm to reed relay,
and it works like charm.
So, idea is harvesting static magnetic field of magnet
by changing the surface area of coils exposed by
shorting coils
alternately at certain points, just like in the picture.
In sliding wire generator concept, wire is moving and exposing more
and more coil to magnetic field.
Sliding wire and resistor (on picture) is making closed circuit while
rest of coil is not.Rest of the coil is not visible to magnetic field, only shorted part,
thats the point!By shorting the coils at some point we can control how much of the coil
is exposed to magnetic field!You can see that in rotating electric generators.
If the load is present and circuit is closed generator you must use force to rotate it!
If the load is not present and circuit is open force needed to rotate it is small!
Only closed circuit is visible to magnetic field and rest is NOT!AREA ENCLOSED BY THE CIRCUIT CHANGES IN TIME - read the yellow in the picture!
It doesent matter is it sliding wire or 2 switches switching alternately,
area enclosed by the circuit will change in time in both cases and
induction will happen in closed part of circuit and current will flow
through resistor!
In that concept sliding wire can be replaced by 2 switch at certain points
and switching alternately could yield same effect as sliding wire between
those 2 points which will result in induction just as sliding wire does.
And there is no moving parts.