Microchip Technology Inc. today announced that its RE46C190 3V programmable photoelectric Smoke-Detector IC received UL component certification for use in single- and multiple-station smoke alarms, ...

The heart of this diy metal detector circuit is the CS209A IC. The metal detector is built with one 100µH coil that has 40 mm in diameter and is made of 50 turns/0.4 mm wire. CS209A has one oscillator ...