
efarlakeland.blogspot.com
EFARReports - PDF Version. Friday, October 23, 2015. Etch Your Own Circuit Boards. Etch Your Own Circuit Board. By Bill Johnson KI4ZMV. Does this look familiar? This was an earlier project. It consists of a /- 5-volt power supply driving an op-amp, which in turn turns on and off a clock, whenever the attached HT senses a signal on our repeater. Nightmare wiring jobs like this make you wonder if there might be a better way. There is. Etch your own circuit board. Step 1. Prototype The Circuit. There are many o...
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