For Beginners! Simple and easy to make.
Let the 10 nA current source be your finger and the series of 1u ohm resistors be a copper wire. When you touch the wire the LED lights, when you dont touch it it glows slightly based on the static charge surrounding the wire.
Some people say it detects ghosts and others think that it is a really boring circuit. What are your thoughts?
If you use a higher supply voltage, then you can replace the PNP with a NPN. Ill let you figure out the connection. Have fun
