This is the fire alarm circuit which use LDR to sense the smoke from the fire, so it can be…
This is the diagram of heat detector circuit which already integrated with siren circuit in the output. This circuit applies…
This is definitely an ultra-sensitive fire sensor that exploits the direct piezoelectric property of an ordinary piezo component to recognize…
This is the circuit diagram of automatic light controller which use 78xx voltage regulator IC series. The voltage regulator ICs…
This is the schematic diagram of LPG gas leakage sensor alarm. The circuit operates off a 9V PP3 battery. Zener…
The circuit, consisting of an infrared transmitter-receiver pair, utilizes IR beam transmission to switch the toy car "on" or "off',…
This is the circuit diagram of seismic / vibration sensor. The circuit simulates a seismic sensor to detect vibrations/sounds. It's…
Above circuit design is thermocouple amplifier circuit using CA3193 operating amplifier. The CA3193 is an excellent choice for use with…
This is a ultrasonic motion detector (or movement detector) circuit. The circuit claimed has a high movement sensitivity. Even air…
This is a very easy build, simple metal detector circuit, built based on a CS209A IC. The circuit will give…