On 16:59, Michael Twieg wrote:
This is what happens when streamer loading detunes the system. The waveforms look ok. You can avoid excessive current growth by detuning the system in the opposite direction, reducing the secondary capacitance a bit, so the system gets better tuned with streamers. I don't see a practical way to keep the system tuned with streamer loading. Maybe designing it with greater coupling, reducing the sensitivity to tuning. But this also reduces the voltage gain.found some primary current waveforms I had taken recently. They're all for the same tuning configuration, but at different repetition rates. At 208Hz: http://imgur.com/TpjEY at 330Hz: http://imgur.com/R9ieE at 523Hz: http://imgur.com/pMq2j Scale is 200A/V or 400A/div You can see how the notch is barely there to begin with at 208Hz, and at the PRF gets higher it disappears and the peak Ip grows greatly. The first 270us of the waveform is being driven by the H bridge, the rest is just freewheeling. I can't tell if the power in the secondary is being recovered or not... Do these waveforms look reasonable? -Mike
Antonio Carlos M. de Queiroz _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla