On 13/08/2023 15:20, Afghan Kabulldust via groups.io wrote:
Alan,
I do a lot of LTSpicing and have manage to simulate Class E Push Pull and have the actual circuit work, however, in this case it is almost impossible to simulate as you so aptly pointed out. The BPF that sort of works, I¡¯ve wound another and have accurately measured the zl on each winding to try to understand what the parasitic capacitances are, a lot does not make sense as it¡¯s very difficult to model all the associated circuitry and it¡¯s L and L values and even the network that it results in.
I tried direct C between inductor taps and the connection to the first half of the GST to see if I could reduce the extraneous networks but the resulting BPFs were all very sharp, which should not be, so series caps from circuit traces and FST are really having a big effect.
Ross,
Hans has made some really innovative designs but that BPF is a masterpiece of complicated simplicity.
