On Mon, Jul 22, 2019 at 1:53 PM AB Pearce - UKRI STFC wrote: > > The major problem I see with having split windings is that you will incre= ase the winding capacitance to ground which will probably not be desirable = at the frequencies you are proposing. The shield is supposed to have a conn= ection brought out and connected to ground if you are seriously looking at = minimising noise coupling between primary and secondary, and having such a = capacitance from the drive end of the winding (the end connected to the tra= nsistor collector or drain) is likely to produce undesirable effects. > One thought to reduce winding capacitance, would be bank winding. Does that solve the capacitance issue ? As in (http://tiny.cc/iq519y) ? In the original case, bank winding was used. The same possibly can be applied, if that helps. > Personally I would wind it with a single shield and then make sure that o= n the primary side the winding end against the shield is connected to the s= upply rather than the transistor. > > 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 ? --=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 .