Read this description of my LZ1AQ amplifier PCB build. Add a one meter loop and some CAT cable and you have a complete wideband magnetic loop that works well. Read more
Category: Electronics Projects
LZ1AQ Loop Amplifier Project Printed Circuit Board
So, great news. I have taken the original LZ1AQ loop amplifier project, fabricated a custom PCB and built it with surface mount parts. It works great. Read more
LZ1AQ Breadboard Performance – Basement Adventures
My early tests with LZ1AQ breadboard performance are very encouraging, even with the loop still located in my basement below ground. Read more
LZ1AQ Loop Amplifier – Breadboard Version
The LZ1AQ Loop Amplifier looks like a stable solution for my wideband magnetic loop project. Time to test a prototype on a breadboard. Read more
Head End Instability – LTSpice Limitations
LTSpice limitations can bite. The macro models used in simulation don’t sufficiently take into account parasitic and circuit layout effects that can haunt you down the road. Read more
Dual Base Amplifier for Wideband Loops
My dual base amplifier is built to match remote wideband loops to a coherent two-channel receiver. Implemented with wideband FET op amps, performance is great. Read more
Wideband Loop Initial Build – Mixed Results
Good news, bad news. My wideband loop initial build sort of works, but the transimpedance amplifier has stability problems. Read more
Learn Hot Air Soldering – Practice First
If you want to learn hot air soldering, you need to practice first. I didn’t and that was a mistake. What looks easy on You Tube videos takes some effort to learn in real life! Read more
LTSpice FFT Spectrum Analyzer for Amplifiers
You can use an LTSpice FFT to check expected performance from an amplifier, and compare simulated results to the data sheet specifications. Read more
Third Party PCB Fabrication – My OSH Park Experience
My first experience with third party PCB fabrication was painless, reasonably priced and relatively fast. Oh, and they are much better than anything I could have done myself. Read more