Lords of the Ring

[otto]

Hello UF,

if you use 2N2222 transistors I hope you have a lot of them.

Otto

[pese]

Getting set up to build. Circuit should take 8 hours or so to build and tune. Would be nice to see what results have been found by others in order to minimize time wasted.

Microcontroller based system will only be built if first circuit shows a small but measurable output on collector coil.

@uncclefester

q1  must als have resistors as R1/R4  (Base-Volt-Divider-resistors.

@ otto

in europe BC 337  do the same.

Pese

[starcruiser]

@UncleFester,

Instead of the signal generator approach why not try using an external magnet to trigger the process?, configure the feedback & control loops to be circular (self triggering, by adding another feedback coil) and use the magnet to start it, the coils would then tend to oscillate at their natural frequency(ies). No circuit tunning necessary since the coils would self align to their sweet spot. The only consideration would be the coils length to tune, Just a thought.

This is the direction I am working on at the moment, self resonance.

I forgot to mention, use a variable resistor in the base divider circuits to tune the sensitivity of the triggers and a diode on the control coils to protect the transistors from the BEMF spikes.

[starcruiser]

One other thing I feel is important is that the drive circuit should be able to run using a 9Vdc battery so this provides us a current and voltage limit for the operation. So this would mean our current source would be less than 800mA, therefore our circuit must be designed with these limits in mind.

After a working model is determined we can then look at closing the power loop to self power after startup.

[Rosphere]

.