It should be said that special electrical shielding caution should be take for high performance diodes, such as schottky diodes, which is why I've spent the past 1.5 years taking as much precaution with my SMS7630 diode array. Most LED's and photodiodes are usually low performance, so often you can get away without any metal shielding, but they need to be in a dark room.
Testing high performance diodes such as schottky diodes requires some patience. The SMS7630 diode arrays that I built require two to three weeks while contained within proper metal shielding to recover before they began producing their normal DC voltage. I'd imagine the same would apply to high performance LED's and photodiodes. At least out here in Los Angeles, CA, such diodes experience appreciable current while outside of metal shielding containment due to external RF signals, which from my experience has shown to always disturb the diode arrays thereby significantly decreasing the DC voltage they produce.
Therefore, when testing high performance diodes such as schottky diodes, it's highly recommended that you allow the diode array to sit inside a *good* metal shielding with the charging capacitors, preferably unloaded, for at least two weeks.
Created on 2009-04-28 18:14:09 by EnergyMover
FE diodes, FE Misc devices, Free energy, Free energy devices, Science, Diode, Free energy