Radio Theory and design

With 10uv in I get 7mv out driving an earbud. The power consumption is less that 2.5ma. It should run for over 100 hours on a 9 volt batt...

The crew breaks for lunch. George pours himself a cup of coffee. He says, "That coffee is hot!". Lunch break the next day George ...

A little off topic but good information. No sew facemask.

For the test I'll use a 15 Volt 80 ma lamp. With 120 VAC at 60 Hertz. I made the little test board with 2 lamps. the caps are ...

Remember the sine wave is generated by the rotating vector. The amplitude of the peak can be determined as the sine of the angle at any g...

The designer in training has a new project to consider. This one is really cool. It does have a couple of underlying factors that can eas...

40/80 continues My friend and I designed the 40/80 in 2018. We used NE612 for the mixers and a logic chip for the oscillator. It was a u...