Simplest MOSFET static electricity detector

This is simplest static electricity detector ever. It's made by 3V lithium battery, a LED and an N channel MOSFET transistor 2SK3019TL. You can use any mosfet transistor with one rule - it must have Gate-Source over voltage protection diode. Have a look at the datasheet for more details: http://home.comet.bg/datasheets/Transistors%202S/2sk3019.pdf

Instructions: connect source to battery (-), connect drain to diode cathode, Connect diode anode to battery (+). Leave gate floating. Done. When you get closer to the "device" the diode will light if you are charged ...
The only problem is that you'll need one more device wtih P channel MOSFET to detect negative charge.

Update - schematic. Someone asked about schematic. I thoght that instructions are clear, but this is the schematic. You only need zener if MOSFET doesn't already have it built in.you can use any zenner above turn on voltage and under maximum voltage. for most mosfets 5.1V is enough, but you can also use 9V to be sure.
http://gallery.croler.net/v/electronics/static+detector.PNG.html

Note that this is more an example how MOSFET works, not a real schematic. So keep your sarcasm for yourself.

Category:

Science & Technology

Tags:

• static charge
• mosfet
• led
• detector

[nickpelov]

it's in the description.

you can also see the schematic:

gallery.croler.net/v/electroni­cs/static+detector.PNG.html

but in the description it's explained better.

[KyPAST]

Would love to see how you built that.