free electricty from crystals

[innovation_station]

my voltage seams to be activating the crystal i have tryed on bigger crystals higher mhz but with less output but works the same

[pese]

my voltage seams to be activating the crystal i have tryed on bigger crystals higher mhz but with less output but works the same

but no both leads of crystal was connected ?
one on crystal one was solded to case .
it this right?
GP

[innovation_station]

it workes both ways 1 to case both leads or better with 1 lead lose

[hartiberlin]

Hi,
put a 10 uF capacitor parallel with the DVM meter and see,
if the cap will charge up.

It is probably just a rectifier effect from the 50 or 60 Hz
or mobile phone RF in your area and maybe the
battery in your DVM is already weak, so it behaves strange...

If you can charge up the cap and it will discharge later,
then you can store the enery also in larger caps !

[bitRAKE]

Is this piezo-electric effect, or something else? Piezo materials can be used as a transformer: http://focus.ti.com/lit/an/slyt107/slyt107.pdf