High Voltage DC to DC Supply Evaluation
The high voltage supply for the vacuum tube transmitter needs to be low noise in the 40 meter band, efficient for battery operation and...
High Voltage DC to DC Supply Evaluation
T/R Switch and QCX Interface and Modification
Single Tube SOTA Transmitter
Vacuum Tube, Battery, Lightweight, Compact, Portable: Can They Coexist?
All Wound Up About EFHW Transformer Winding
Evaluating efficiency, transformer and mismatch losses in toroid transformers - some observations.
Reactive Component Measurement With the NanoVNA
Toroid Transformers - How Hot Will It Get?
Electrostatic Discharge (ESD), Does it Matter for Makers and Hackers?
Don't Fear the Smith Chart
How I Killed a Microcontroller
The Digi-Disco, a 1970's Light Controller
Wishing You a Very Random Christmas
Big Font Clock Update: Dimmer-Interface PCB and Setup Instructions.
Auto Run for your Raspberry Pi - how to have your Rpi boot up in the desired configuration.
Big Font Clock - Relieve for Old Eyes