Has anyone seen Lasersabers new motor runs on 1000uf cap

[conradelektro]

Circuit Diagram = http://xkcd.com/730/

That's it, perfectly clear. Should be patented. You made a big error by disclosing it. A wasted opportunity to become rich and famous (and to save the world at the same time).

Greetings, Conrad

[gyulasun]

The double Reed switch dilemma:
....

Hi Conrad,

I understand your dilemma and agree with your conclusion, question is what can we lose from this problem. If we think of wattsup's transformer feedback proposal for instance, considering the interruption of current, does it matter which of the reeds switches off a moment later than the other? While I have not had an opportunity to test this, I think the bottom line is: current be finally interrupted at a moment (and this is what should be adjusted well) which is the BEST moment for operating the motor setup, this is to be adjusted with any one of the reeds out of the two.  The spike from the interruption will appear across the transformer's primary coil too anyway, so it can get transformed to the secondary coil too.  Is there something here I fail to see?


Regarding the Adams motor schematic where there are also two reeds operating, shown by Lanenal and advised to you by me, I just remembered Ossie's magnet motor with air core coils and 2 reed switches, see this link: http://jnaudin.free.fr/ossiemotor/indexen.htm

The schematic practically is the same as that from member Lanenal. Good info is given on how to time the two reed switches, watching the switching spikes on the induced waveform.

(Ossie's coils have 0.5 Ohm DC resistance each, from generator point of view this is desirable if higher capacity battery is to be charged up from the spikes.)

Greetings,  Gyula

[wattsup]

@conradelektro

I see you have a scope so maybe use one channel per reed and see their contact on the screen one over the other while you use a battery as feed to make sure the reeds register on the screen.

If the six rotor magnets are not at perfect 60 degrees on the rotor then both reeds have to be located at the same area. At the rotation speeds we are talking about and given the long reed action times, you should be able to find the "sweet spot".

You can always add a 7th magnet on the rotor but at mid-radius facing upwards with an 8th magnet holding the 7th in place from under the rotor. This would permit easy movement of that magnet pair to adjust. Place the reeds one next to the other making sure the reeds are both placed the same way next to each other with their flat side both horizontal then tape them and place over or under the top rotor shaft bridge support. Then  by sliding the magnet into position you can test their simultaneous closing. There should be a location where both reeds will close and overlap.

wattsup

[conradelektro]

I got the relays and managed to get out the coils. They have 1600 Ohm DC resistance.

To get the coil out of the little housing of the relay one has to do some drilling, milling and hacksaw cutting. Not for the faint hearted without tools.

It will take some time till I have built a new 6 coil motor which can be expanded to 12 coils.

Greetings, Conrad

[Farmhand]

Also posted at @lasersabers web site.

@LaserSaber

I really don't want to overburden you by suggesting you should migrate the design to 123D. Best you spend your time on more crucial matters. Forget about eBay when you have @wattsupbay right here ready to buy any one of your present models just to get my hands dirty, uh wet, uh busy, uh you know what I mean.

An easy test.........

Find a very small standard transformer (or one you have made yourself) and put the primary in series on one or the other side of the reed and see what you can get from the secondary. Then feed back the secondary to the holding cap. Maybe rectify the secondary with a germanium diode so the cap does not unload itself into the secondary. This would be a first trial in looping some energy back to the source capacitor without relying on the actual existing system.

If you want to get it working even harder use a second reed on top of the first reed and connect the transformer primary between the reeds so all three are in series (reed-transformer primary-reed) so that the primary gets completely disconnected from both sides when the reeds are open. See the effect.

When you apply any power source to a coiling system, does not matter how it is driven, if only one side of the coil is a breaking point, the other side of the coil is still permanently biased to the source polarity so the change in the coil is never complete. Is is only complete when both coil ends are completely disconnected that the coil re-biases itself to the only field left........to the Earth field, just  like your compass will bounce back to north (or south) when you remove a magnet. This may provide some added energy source but only if the coil is completely off the source from both sides. Sounds simplistic but I have found this to be very true.

The problem arises when such a scheme is tried with mosfets or transistors, the above condition can never be 100% true as it can be with a physical reed break. You can even try a second reed without a transformer and just put that second reed on the other side of your series coils and see the effect.

wattsup

Coils work on current flow.

I don't see any reason for a big difference between a low side switch a high side switch and both, effectively in the moments when current flows through the coil the same effect will happen, which is current will flow through the coil, The only real advantages for different switching methods is dependent on other considerations. The current through the coil should happen exactly the same with a low side switch as a high side switch or both if the discharging of the coils field energy is not considered and only the current flowing from the switching on. What happens after switch off is more dependent on the switching method I think.

Is there any test that shows a coil switched at both ends has a higher magnitude of current or whatever when switched at both ends ? Just because the voltage is present at the switch at the low end of the coil just before turn on means nothing much. It's just voltage.

The problem with a mosfet for a motor can be that the current can flow backwards through them via the body diode, unlike a bipolar. That can be mitigated or stopped, or it could be beneficial. Depends.

Basically if both ends of a simple coil are completely disconnected from the circuit at switch off the inductive energy release is unrecoverable.

Cheers