This 1989 circuit uses a gas sensor from the era, which is hard to find these days. The circuit triggers an oscillator that has a medium impedance speaker as its load.
Gas and smoke detector (CB22198E)
- Details
- Written by: Newton C. Braga
This 1989 circuit uses a gas sensor from the era, which is hard to find these days. The circuit triggers an oscillator that has a medium impedance speaker as its load.
