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Sensors electronic circuits design projects

Sensor based electronic circuits design projects and schematics

RE46C190 photoelectric smoke detector circuit design

Using RE46C190 photoelectric smoke detector circuit can be designed a very simple and low power smoke detector alarm project..
With minimal external components, this smoke detectors alarm circuit will provide all the

Circuit Diagram: 
RE46C190 photoelectric smoke detector circuit
Electronic Circuits: 

Ultrasonic proximity detector circuit

This ultrasonic proximity detector circuit is designed using few external electronic components .
If an solid object is moved in close proximity to the front of the buzzer , the relays drops out .
The R4 ( 100k ohms potentiometer ) sets the current fed to the buzzer ( sounder) . The potentiometer must be adjusted to a sounder point where the buzzer begins to sound .

Circuit Diagram: 
Ultrasonic proximity detector circuit design project
Electronic Circuits: 

Ion detector circuit diagram electronic project

An very simple ion detector circuit can be designed using this circuit diagram .

Circuit Diagram: 
Ion detector circuit diagram electronic project
Electronic Circuits: 

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