Mike Nice to hear from you...You get HF AC, but it isn't interrupted by the mains frequency (assuming you have a decent amount of smoothing).
It will of course be interrupted by the spark gap either rotary or static. In the case of a rotary gap that will introduce an audio tone depending on the speed and number of gaps. There may be another frequency introduced by the DC supply taking time to charge your primary cap, then a discharge via your spark gap too.
All these factors will make it sound different at audio frequencies from an AC coil, the result is the same though, busts of HF into your coil and out as (hopefully) sparks.
Derek On 07/12/2013 16:41, Mike Tucknott wrote:
Hi all Been a long time since I'v asked for any help but I'v a question that I need an answer to. When I run a classic style coil AC transformer, spark gap, MMC cap, the spark output Is high frequency AC, so what output am I getting when I run my coil on a high voltage DC power supply. I'm running our 15KVA through a full bridge rec, through a giant stack of DC smoothing Caps, charging choke and then a de-Qing diode. This lot feeds back in to the old coil primary tank, RSG and MMC. The sparks look and sound different. Thanks guys Mike tucknott Sent from my iPad _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla
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