Coin discrimination apparatus

Details Coin discrimination apparatus Coin discrimination apparatus

G - Physics

07

D

G07D 5/08 (2006.01) G07F 3/02 (1990.01)

Patent

CA 2114520

Coin discrimination apparatus such as a coin validator includes a pair of coils (6a, 6b) on opposite sides of a coin rundown path (4), which are selectively energised to carry out a sequence of inductive tests on a coin as it passes between the coils, The re- sultant inductive coupling of the coils is monitored for each test. In a first test, both coils are energised in phase, In a second test, the coils are energised in anti-phase. For a third test, coil (6a) is energised individually. In a fourth test, coil (6b) is energised indi- vidually. For a fifth test, coil (6b) is energised as a transmitter and the inductive coupling to coil (6a) is monitored. Alternatively the fifth test can be performed by a separate coil pair.

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