/biz/ - Business & Finance

>>28804940
Yukari anon, another EE here, remember if you try to test the electrical properties of your silver that AC testing won't work the way you think it will due to skin effect. At high frequencies, you'll basically only be testing the surface which could let plated coins slip by. Furthermore, getting good AC contact is going to be a bitch and you'll probably get more reflections from the coin-probe interface than any irregularities in the coin.

DC testing is probably a better bet, though non-destructive test is not my field of expertise so not 100% it's practical. To get an actual conductivity measurement to compare to the conductivity of silver, you'd need to calculate the effective cross sectional area, so comparative (good coin / bad coin) measurement seems your best bet. Good luck.