Metallic pipe detector


Posted on Dec 5, 2012

This circuit uses a 15-kHz oscillator coil. Whan metal placed ixi the energy field is withdrawn, the oscillator voltage is rectified and compared to a reference. A drop in oscillator voltage therefore operates comparator IC2 and D4 (LED) extinguishes.


Metallic pipe detector
Click here to download the full size of the above Circuit.

L1= 500 turns enamelled copper wire. 0.2 - 0.3mm diameter. on ferrite rod 200mm long and 10 mm diameter.





Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LCD Serial Terminal
Low energy consumption audio signal generator
Tape recorder position indicator-controller
Courtesy-light-extender
ColonBlow robot
Tube Technology
xilinx Documenting Digital Design Schematics and Figures
pic PIC16f877A resets due to external noise
Regulated Positive Voltage Booster
brake sensor
monitor splitter
STK672-050 Microstep Operation-supported 4-phase Stepping Motor Driver (io= 3.0a) Semicon Device
Voice changer circuit diagram electronic projects using RTS0072B
Colpitts Oscillator Practical Project
autonomous mobile robot capable of avoiding obstacles circuit



Top