Quote:
Originally Posted by Alf
This circuit relies on capacitive coupling between pins 1 and 2. |
And that circuit, very helpfully includes the stray capacitances which the operation relies on, marked in.
The OP's circuit doesn't, so yes I'd be confused similarly. Unless the text makes it clear... but while it could work at SW, it definitely would not work well for LW unless stray capacitances were augmented by a deliberately-added extra component.
As the RFC in shunted by a capacitor (part of the Colpitts capacitive tap) then it should not be overly critical.