On Mon, Jul 22, 2019 at 8:36 PM Manu Abraham wrote= : > > On Mon, Jul 22, 2019 at 7:27 PM AB Pearce - UKRI STFC > wrote: > > > > > Personally I would wind it with a single shield and then make sure th= at on the primary side the winding end against the shield is connected to t= he supply rather than the transistor. > > > Slightly confused by this statement. > > If you look at the presentation from Ridley, he states the power > supply end needs to be the farthest from output ground. (Page #7) for > a low noise configuration. > > http://tiny.cc/pgm29y > > In which case a bank winding would allow the most distance between the > 2 ends, right ? > > > > > > >> I was of the assumption that the shield should be Grounded. But you = mention Supply. > > >> I've been looking at different designs. I see that most of them have= the shield connected > > >> to the Aux/Bias power supply (not ground). Any idea, why ? > > > > The shield should be grounded, but here I was talking about the supply = end of the primary winding. > > > > Connecting to some other supply may allow lower capacitance or leakage = or coupling between windings. I don't recall seeing a circuit done this way= though. > > > > Perhaps a link to a reference is in order? > > Sure, I was looking at this one, atm: > > http://www.ti.com/lit/ug/sluuax9b/sluuax9b.pdf > (Page #5, #20) Additionally, tripped up on this video on youtube with a similar configuration. That was indeed a coincidence. http://tiny.cc/0xv29y 2 shields, both connected to the Aux winding. Strange though, why Aux windi= ng .. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .