0

March 25, 2016 AT 12:44 pm

Investigating Mystery Notches in Double-Tuned Circuits #hamradio #hamr

David Rowe was getting notches in his double-tuned filter signals, so he decided to investigate, and publish his results. I’m especially giddy with this line:

Physically, this is parasitic capacitance coupling across the air gap between the coils.

uhf_dtc

uhf_bpf_notch

Read more.


Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground”Adafruit’s Apps!


Maker Business — MakerBot’s technology of the future grapples with its rocky past

Wearables — Glue thoughts

Electronics — Check out this shorthand shortcut

Biohacking — Take a Tour of the Alcor Cryonics Facility

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.