Amateur Radio Junk Bin Antenna Tuner I threw together a junk bin L network antenna tuner. The inductor is wound with solid core 14 gauge wire. The variable capacitor was scrapped out of an old (non
Electronics Digital Clock - 7490 Decade Counters and a Hacked Quartz Clock No microcontrollers needed here! I got carried away playing around with some 7490 decade counters and ended up building a digital clock with stuff I have around the lab. Schematic
