Hi all,
I hope that this is in the right place (sorry if it isn't).
I am a bit of an avid ghost hunter and saw a simple sensor that picks up static using a PP3 battery, LED and MPF102 transistor.
While this works, sort of, when I power it on, the LED tends to stay lit, goes off when I put my hand near it, then either stays off or slowly comes back on. Sometimes it seems to work in reverse and I am struggling to understand what it is doing.
It might help me design this properly if I understood how the transistor is working - it is hot-glued to a PPC enclosure for ease but could this be impacting how it works at all?
Thanks,
Andy
I hope that this is in the right place (sorry if it isn't).
I am a bit of an avid ghost hunter and saw a simple sensor that picks up static using a PP3 battery, LED and MPF102 transistor.
While this works, sort of, when I power it on, the LED tends to stay lit, goes off when I put my hand near it, then either stays off or slowly comes back on. Sometimes it seems to work in reverse and I am struggling to understand what it is doing.
It might help me design this properly if I understood how the transistor is working - it is hot-glued to a PPC enclosure for ease but could this be impacting how it works at all?
Thanks,
Andy