¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. QRPLabs
  2. Messages
Single Messages Topics Expanded Polls

Re: What is the effect of L4?

 

This is explained in 5.10 of the assembly manual.
In the U3S and other class C designs the inductor at L4 is just a choke to feed DC power to the finals. The QCX works in class E and the L4 inductor is in resonance with the C30 capacitor and all the additional capacitance from the BS170 gates (and pc-board etc).
Join [email protected] to automatically receive all group messages.