Mysterious Resonant Circuit

[aleks]

Thus far does not show cop>1 for me.
I need to get the right tranny.

You also need a right toroidal winding - yours does not look right. (white wire is roughly wound, spaced far apart, and it is not synced to 3 base windings)

[Peterae]

Yucca
The transistor made all the difference for me, i also could not get good results until i tried the 2n2219A

Peter

[xee]

@ Yucca
Your documentation is good but I am still confused. Your scope shot seems to show 32 MHz across the power supply resistor. Is your DVM rated for reading AC current at 32 MHz? If not that could be why the DVM reading was bad. EMdevices was filtering out the AC and just reading the DC current.

[buzz-ard]

Two different toroids, three builds each and new windings each time, all new components. Can't get anything at all out of it without pumping at least an amp through the 2N4401, and can only do that for a half-second before it overheats. Re-arranged the circuit to use a MOSFET and got even less. The exact magnetic properties of the toroid must be critical.

[innovation_station]

@ Yucca
Your documentation is good but I am still confused. Your scope shot seems to show 32 MHz across the power supply resistor. Is your DVM rated for reading AC current at 32 MHz? If not that could be why the DVM reading was bad. EMdevices was filtering out the AC and just reading the DC current.

why not utialize it ?? insted of discarding it.....

ist