Magnetometer


Posted on Aug 8, 2012

The circuit uses two general-purpose npn transistors, Ql and Q2, and a special hand-wound, dual-coil probe ferrets out the magnetism. Ql and its associated components form a simple VLF oscillator circuit, with LI, C2, and C3 setting the frequency. The VLF signal received by the pickup coil, L2, is passed through C5 and rectified by diodes Dl and D2.


Magnetometer
Click here to download the full size of the above Circuit.

The small dc signal output from the rectifier is fed to the base of Q2 (configured as an emitter follower), which is then fed to a 0-1 mA meter, Ml.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

PIC Programmer schematic RS232
6.9 GigaHertz Chrono PC-based
Scrolling text in LED dotmatrix display
LEDs Design Ideas
Rectifier/filter circuit Semiconductors
IDEfile ProFile Emulator
HOLTEK 9200B & 9170B DTMF Generator & Receiver
1999 S10 2.2L Fuse Box Quesion. There are two (what appear
Automotive LED driver circuit diagram LT3486
Audio remote control switch schematic
100W AM Valve RF Transmitter circuit



Top