GB1342119A - Electric coin detecting apparatus - Google Patents

Electric coin detecting apparatus

Info

Publication number
GB1342119A
GB1342119A GB2191471A GB2191471A GB1342119A GB 1342119 A GB1342119 A GB 1342119A GB 2191471 A GB2191471 A GB 2191471A GB 2191471 A GB2191471 A GB 2191471A GB 1342119 A GB1342119 A GB 1342119A
Authority
GB
United Kingdom
Prior art keywords
coin
transistor
scr3
scr1
resistor
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
Application number
GB2191471A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MODERN RESEARCH Inc
Original Assignee
MODERN RESEARCH Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US1163670A priority Critical
Application filed by MODERN RESEARCH Inc filed Critical MODERN RESEARCH Inc
Publication of GB1342119A publication Critical patent/GB1342119A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08Testing the magnetic or electric properties
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/02Testing the dimensions, e.g. thickness, diameter; Testing the deformation

Abstract

1342119 Semi-conductor switching circuits MODERN RESEARCH Inc 19 April 1971 [16 Feb 1970] 21914/71 Heading H3T [Also in Division G4] In a coin tester (see Division G4) the effect of a coin on an oscillator comprising field effect transistor F.E.T. 1 and resonant tank circuit L2, C9, VC1 is monitored by a pair of transistors Q3, Q4 connected across resistor R9. The amplitude of the output pulse at the collector of transistor Q3 is dependent on the material of the coin passing inductor L2 and this pulse is differentiated by circuit C13, R12 to provide positive and negative spikes (Figs. 6 and 7, not shown) the latter of which fires SCR3 to energize an accept solenoid if the coin is genuine. Transistor Q4 is set by potentiometer VR3 to become conductive when the voltage drop across resistor R9 is greater than that of a genuine coin and energizes relay RS1 to change over switch RS1a discharging capacitor C13 and ensuring that SCR3 is not fired. In another embodiment (Figs. 2 and 3, not shown) the build up of a coin material dependent control signal at the gate of (SCR1) controlling accept solenoid (SC3) is delayed by RC network (R5), (C8) and if the signal reaches an unacceptable level Zener diode (D2) will break down and fire (SCR2) to hold the gate electrode of (SCR1) at ground potential.
GB2191471A 1970-02-16 1971-04-19 Electric coin detecting apparatus Expired GB1342119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1163670A true 1970-02-16 1970-02-16

Publications (1)

Publication Number Publication Date
GB1342119A true GB1342119A (en) 1973-12-25

Family

ID=21751322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2191471A Expired GB1342119A (en) 1970-02-16 1971-04-19 Electric coin detecting apparatus

Country Status (4)

Country Link
CA (1) CA951403A (en)
DE (1) DE2107325A1 (en)
ES (1) ES388278A1 (en)
GB (1) GB1342119A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016696A2 (en) * 1979-03-15 1980-10-01 Third Wave Electronics Company, Inc. Coin detecting apparatus
GB2184279A (en) * 1985-12-13 1987-06-17 Jofemar Sa Electronic coin selector

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326621A (en) * 1979-03-15 1982-04-27 Gaea Trade And Development Company Limited Coin detecting apparatus for distinguishing genuine coins from slugs, spurious coins and the like
US4354587A (en) * 1980-10-17 1982-10-19 Third Wave Electronics Company, Inc. Coin acceptor or rejector
US4359148A (en) * 1980-10-28 1982-11-16 Third Wave Electronics Company, Inc. Coin acceptor or rejector
US4460003A (en) * 1981-08-21 1984-07-17 Mars, Inc. Coin presence sensing apparatus
JPH01224890A (en) * 1988-03-04 1989-09-07 Sanden Corp Coin identifier
US6267662B1 (en) 1999-04-13 2001-07-31 Mars Incorporated Measuring a stack of coins in a coin handling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016696A2 (en) * 1979-03-15 1980-10-01 Third Wave Electronics Company, Inc. Coin detecting apparatus
EP0016696A3 (en) * 1979-03-15 1981-05-13 Gaea Trade And Development Company Limited Coin detecting apparatus
GB2184279A (en) * 1985-12-13 1987-06-17 Jofemar Sa Electronic coin selector
GB2184279B (en) * 1985-12-13 1989-11-15 Jofemar Sa Electronic coin selector

Also Published As

Publication number Publication date
DE2107325A1 (en) 1971-12-23
ES388278A1 (en) 1974-03-01
CA951403A (en) 1974-07-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees