Coin selectors

Details Coin selectors Coin selectors

1991-07-15

1993-09-28

Bartuska, F. J.

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

194339, G07D 504

Patent

active

052480232

ABSTRACT:
Improvements in coin selectors to determine weight as an additional measurement to the alloy, diameter and cross section consisting of a mechanical device made up of two overlapped levers (2) and (3) the free end of lever (2) remaining under an orthogonal projection (6) of lever (3), lever (3) being in connection with a ferrite (7) in whose magnetic field it penetrates, upon the coin being located in area A of lever (2). It has an electronic device made up of an oscillator (8) of ferrite (7) with a rectifier (15) to determine the wave amplitude of the oscillator, as well as an analogic-digital converter (16) which transforms the analogic value provided by the rectifier into a number that the C.P.U. (17) processes. On the other hand, the Schmitt scale (18) transforms the sinewave into rectangular impulses, passing over a bridge (19), the C.P.U. determines the period and processes this information, obtaining the weight of the coin.

REFERENCES:
patent: 4327824 (1982-05-01), Nicholson
patent: 4437478 (1984-03-01), Abe

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