[TCML] Q

["Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>]

Hi Gary,

I've been looking at your coil specs a tonight. I don't know if you have 
equated it but the transfer rate is really fast at 1.7us! Although this 
little coil is similar physically to the norm, that Mhz range really 
increases the transfer rate significantly. I wonder how the coil would 
work under a more typical transfer rate say in 10us or so?

The only way you can alter that is to reduce coupling. I'm kind of 
curious if the high frequency and transfer rate is an area we are 
overlooking with these small coils? We always seem to build them 
physically the same (scaled down), but we are not accounting for the 
frequency and di/dt which is associated with it.

In your case, due to the 38 awg wire size, there will be some large AC 
losses. Even though transfer rate is quick, the Q is only about 144 on 
this coil. This is what I was trying to explain about high frequency 
coils with normal turn ratios.

I kind of doubt a reduced coupling would do better due to the Q and 
secondary losses.

Take care,
Bart


> > --- "Lau, Gary" wrote: 
> > Hello All, 
> >
> > I have finally gotten around to documenting my Bug 
> > Zapper Transformer (BZT) powered coil on my web 
> > site. For those interested, please see 
> > http://www.laushaus.com/tesla/bzt_coil.htm 
> >
> > Regards, Gary Lau 
> > MA, USA 
> >     
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla