All items tagged with signal processing and circuit (3)

| Wireless alarms are everywhere: homes, businesses, and public facilities. But what happens when someone deliberately blocks their signal? Th...

| Long before SDRs became commonplace, this sophisticated FM exciter demonstrated how to generate precision wideband transmissions in the 430–...

| Never miss a blown fuse again! This ultra-simple four-component circuit ensures you’re instantly alerted when a mains fuse fails, using an a...