ES8800771A3 - Improvements in a coin discriminating apparatus - Google Patents
Improvements in a coin discriminating apparatusInfo
- Publication number
- ES8800771A3 ES8800771A3 ES549338A ES549338A ES8800771A3 ES 8800771 A3 ES8800771 A3 ES 8800771A3 ES 549338 A ES549338 A ES 549338A ES 549338 A ES549338 A ES 549338A ES 8800771 A3 ES8800771 A3 ES 8800771A3
- Authority
- ES
- Spain
- Prior art keywords
- coil
- coin
- arrangement
- voltage
- longer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
Various electrical coin testing arrangements are described which may be used in coin sorters or in coin validators for example. In each arrangement a transmit coil is pulsed with a rectangular voltage pulse and the eddy currents in an adjacent coin under test are monitored, either by monitoring the resulting current in the same coil or in a different coil. In one arrangement, Figure 7, particularly suitable for a coin validator, a single coil 3 acts as both a transmitter and receiver and is successively pulsed with voltage pulses of different lengths, and the decaying eddy currents are measured by measuring the coil voltage after delays which are longer for longer voltage pulses, in order to reduce the dynamic range requirements of the monitoring circuitry A, M. In a second arrangement, Figure 4, two transmit coils 3, 4 are used, the larger coil 3 being larger than each of the coins 6 to be tested, and the smaller coil 4 being smaller than each coin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES549338A ES8800771A3 (en) | 1985-11-27 | 1985-11-27 | Improvements in a coin discriminating apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES549338A ES8800771A3 (en) | 1985-11-27 | 1985-11-27 | Improvements in a coin discriminating apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
ES549338A0 ES549338A0 (en) | 1987-11-16 |
ES8800771A3 true ES8800771A3 (en) | 1987-11-16 |
Family
ID=8490300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES549338A Expired ES8800771A3 (en) | 1985-11-27 | 1985-11-27 | Improvements in a coin discriminating apparatus |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES8800771A3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8625743B1 (en) | 2011-04-28 | 2014-01-07 | General Electric Company | Inverse pulse control for eddy current abatement |
-
1985
- 1985-11-27 ES ES549338A patent/ES8800771A3/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8625743B1 (en) | 2011-04-28 | 2014-01-07 | General Electric Company | Inverse pulse control for eddy current abatement |
Also Published As
Publication number | Publication date |
---|---|
ES549338A0 (en) | 1987-11-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD2A | Announcement of lapse in spain |
Effective date: 20170627 |