This circuit has a sensitivity of 2uW. We found it in documentation from the 1980s. The integrated circuit is from that time. Equivalents can be tried.
When the phone rings, a high-powered incandescent light comes on. This circuit can be interesting to...
The sensors and integrated circuit used in this circuit are uncommon today. However, it is worth...
This oscillator produces a signal with a central frequency in 1 MHz. This frequency can be...