All items tagged with Elektor 65 and Circuits & Circuit Design (4)

| A handful of CMOS logic chips is all it takes to build this versatile warning alarm. Discover a classic 1980 Elektor design that monitors se...

| How were engineers charging Li-ion batteries before today's highly integrated charger modules? Back in 2007, Elektor published a compact MAX...

| A DIY square-wave source doesn’t need to be complicated. This compact 1992 design delivers 57 stable, TTL-compatible frequencies from a sing...

| The Basic Electronics book series (1959) helped spark Dr. Richard Honeycutt's fascination with tube circuits and transistors. Here he reflec...