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 Whan metal placed ixi the energy field is withdrawn, the oscillator voltage is rectified and compared to a reference.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

CW Transmitter
Vcr Tv On-Off Control Circuit
Vehicle Sensor Control for Parking Lot Management System
modified battery charger circuit
ultra capacitor technology powers electronic circuits
I have a Teac ctm805sr tv suffering pincushion
MM36SB020 two-wire wiring diagram
Five stalls can control fan speed optical circuit



Top