Circuit setups for pulse motors

[Artic_Knight]

hey can anyone help me understand how the trigger coil of this setup works? seems to me by law of induction once the trigger coil fires off and activates the primary coil the primary will become energized and induction will create an opposite current keeping the circuit in the on state until it uses all available current! even if the magent is not present it will stay on by my knowledge. can someone elabrate on this?

[gyulasun]

hey can anyone help me understand how the trigger coil of this setup works? seems to me by law of induction once the trigger coil fires off and activates the primary coil the primary will become energized and induction will create an opposite current keeping the circuit in the on state until it uses all available current! even if the magent is not present it will stay on by my knowledge. can someone elabrate on this?

Hi,

Here is some info from John Bedini: http://tech.groups.yahoo.com/group/Monopolemotor/message/62 and http://tech.groups.yahoo.com/group/Monopolemotor/message/69 
In that Monopolemotor yahoo group there is some more useful info if you read letters from Bedini (unfortunately there are not many) and you can find those fews from the start of the group till message 69.

It is possible you will have still questions though, for Bedini mainly included the story behind his monopole circuit.

On your second question, I think when the magnet just passed the coil and going away and the primary coil's current has been already on, then the induced voltage/current in the trigger coil by the passing magnet gets reduced so the transistor suddenly switches off. I do not think the primary coil's magnet field caused by the switched-on transistor has any effect in the base drive via the trigger coil,  the control of the base-emitter is done by the induced voltage/current from the coming and going magnets.   Then after the transistor switches off, the collapsing field in the primary creates the flyback pulse that is led into the second battery via a diode from the collector pin of the transistor.

rgds,  Gyula

[Artic_Knight]

i just found out there are different diode kick in times. the silicon (most popular) diode allows electric flow after .4 volts. this is a loss of electricity! maybe not much but im trying to maximize the gains everywhere i can. i found that ge (geranium?) diodes have a start voltage of .2 volts. whats the best diode available with the lowest start voltage?

thanks

[guruji]

Hi guys I build one with a 2n3055 but after a while no emf was coming.
How can I switch on and off the transistor completely?
I'm posting a rough sketch of my circuit.
Any help please?

Thanks

[gyulasun]

Hi guys I build one with a 2n3055 but after a while no emf was coming.
How can I switch on and off the transistor completely?
I'm posting a rough sketch of my circuit.
Any help please?

Thanks

Hi,

I think you have a wrong schematics the pulse coil is to be placed in series with the transistor collector (it may work in series with the emitter too)  but your bridge rectifier (4 diodes) is NOT needed: a single diode for capturing the flyback voltage after the transistor switch-off is just enough, with the correct polarity connections.
Try to build the schematics uploaded above by Artic_Knight in reply #442, it seems ok.  But first check all your diodes and the transistor with an diode tester of a DMM to make sure all of them is still ok. Maybe your transistor or any diode is already a short circuit?

The transistor switches off completely when the magnet has already passed the coils and moving away from it.

rgds, Gyula