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.
73
Ross
Sent from my iPhone 6
toggle quoted message
Show quoted text
On 13 Aug 2023, at 15:10, Afghan Kabulldust via groups.io <kabulldust@...> wrote:
?Alan, quite a bit of frustration, believe me! HB was much much easier.
73
Ross
Sent from my iPhone 6
On 13 Aug 2023, at 14:54, Alan G4ZFQ <alan4alan@...> wrote:
?On 13/08/2023 13:57, Afghan Kabulldust via groups.io wrote:
I have a 40/30/20/17/15/12/11/10 QDX on the test bench QRV 40m this minute.
Thanks for taking all the fun (and frustration) away Ross:-)
73 Alan G4ZFQ
