12 times more output than input, dual mechanical oscillation system !

[TinselKoala]

The MHOP should be able to do the job for you nicely.

This was a joint effort between MileHigh and TinselKoala, and it was presented on this board.

All the details are available on this forum,, just go look for them.

Heh.... the   MHOP was designed to be a "better than Bedini" pulse motor and was set up to use a sense coil instead of a Hall sensor, in keeping with the basic Bedini designs. Its timing is set manually by moving the sense coil and the dwell, or pulse duration is set by a sensitivity control in the op-amp circuitry. It could be easily modified to use a ratiometric Hall sensor in place of the sense coil.

For Lawrence's specific application, a rotary shaft position encoder with 4000 line per revolution resolution and a simple microprocessor control (Arduino for example) would be better, I think. Digital is always better, isn't it?

The rotary encoder wheels, kits, sensor/interface etc are available from USDigital and aren't too expensive.
http://www.usdigital.com/products?gclid=COLkh_Wc7MUCFYoYHwodRQQAcw

So the position of the rotating part can be read to 1/4000 of a complete revolution by the Arduino, and the pulse edges can be set to occur at any specific line count in that range by a couple of simple potentiometers connected to the Arduino. The necessary program code is almost trivial to implement, very basic line counting and analog-digital read-write statements using ordinary potentiometers to set the pulse edges. Or if timing and dwell need to be varied automatically with rotor speed or other parameters, the Arduino can be programmed accordingly to handle that. 

[ltseung888]

In #3302, I take it that the ring+magnet rotates and the two coils are static. Not sure how the ring is to be held, but let's skip over that.

No.  The ring is stationary.  Only the Magnet moves.

[ltseung888]

Hope the design thought diagram clarifies the process.

May use oscilloscopes and other devices to help to get full picture with all the back EMF and pulsing peaks  etc.

The initial design thought was to have the donut ring stationary.  From the outside, no moving parts...

[Paul-R]

Remember Ockham's razor"? No need to mess around with lasers. A hole in a piece of cardboard will do nicely and have an LED shine through it. The circuit diagram in Patrick's Chapter 1 page 21 should be about right.

[ltseung888]

Remember Ockham's razor"? No need to mess around with lasers. A hole in a piece of cardboard will do nicely and have an LED shine through it. The circuit diagram in Patrick's Chapter 1 page 21 should be about right.

Are you talking about the circuit diagram below?

I cannot see the link to the flying saucer Drive Coil ON/OFF design.  Please elaborate.