Pulse motors & cemf

[gyula]

Hi,

Is not it normal with pulse motor like that? You get the flyback pulse when you just switched off the coils so there can be no load to the source battery when you utilize the flyback. That is what I think.
Do you happen to have an oscilloscope? Would be very useful to see the flyback pulse.

rgds, Gyula

[SkyWatcher]

Hi gyula, no its not totally unexpected, but normally with bedini type repulsion setups one cant bring the cap voltage below source voltage without it reflecting back and causing an increase in current thats why in bedini's solid state switcher he disconnects from the source briefly and the same would be the case for a motor. So with a bedini pulse motor one could never use a 24V input and charge a 12V battery without an increase in current draw unless the source was disconnected. now the current increases because for example with the repulsion pulse motor there is still counter emf when input is removed along with collapsing field and if the counter emf is greater than the voltage in the cap or a battery we have current flow towards cap caused by counter emf more so than flyback which shows on the meter and lentz slowing motor. What ya think.

[gyula]

Hi,

Yes, ok but when I wrote it was normal I had thought of Garry's style pulse motor where two coils are always in parallel so whatever is induced in them get cancelled due to the opposite phases.
And this should be true for the flyback pulses too, hence to regain flyback pulse energy from the parallel coils Garry said you have to break the parallel connection in the right moment with a switch and also use capacitors but he did not show circuit drawing on that.

The situation you described in your last sentence can possibly happen, unfortunately I have not tested repel type pulse motors in that respect. If it happens like you say than Lenz effect surely occurs.

rgds, Gyula

[SkyWatcher]

Hi gyula, i was just using the bedini repulsion motors as an example since you said pulse motors i didnt realize you were speaking directly of garrys motor. yes garry did say you needed to seperate the parallel coils but I can still get a flyback from the paralleled coils because like i said there still is lentz when shorted its just much lower than standard motors partly because their parallel and partly because of the departing cancellation polarity however when speaking of the flyback there is much more voltage induced than the normal counter emf that can be used to charge batteries and so we dont have to seperate the coils. Im only telling you what im seeing in this motor and the fact that i can use 24v or 36v input and charge a 12v secondary battery if familiar with other pulse motors is not the norm. also i think maybe what garry meant was that an ideal method would be to seperate the coils to recover flyback not the only way. as far as voltages phasing one another out i know what your saying but even garry pointed out that there are two counter emf's in this motor geometry and as the magnet departs it cancels any build up of voltage in parallel coils so we have less to fight against when pulsing and then his mentioned possible forward voltage aiding effect when pulsed. also ron pughs tests did show voltage still and the capacitance effect may play a role here enabling the use of the flyback without my seperating the coils. I'll be doing some more tests, all i can say is this pulse motor is different than other motors and since i cant see into the atomic structure of stuff im only offering what i see and think like anybody else.

peace, love, light