Voltage Sensitive Probe  

Voltage Detector Circuits
Added on
Jan 10, 2013
This circuit is so sensitive it will detect `mains hum.` Simply move it across any wall and it will detect where the mains cable is located. It has a gain of about 200 x 200 x 200 = 6,000,000 and will also detect static electricity and the presence of your hand without any direct contact. You will be amazed what it detects! There is static electricity EVERYWHERE! The input of this circuit is classified as very high impedance.
Voltage Sensitive Probe - schematic

Leave Comment

characters left: