EP1193656A3 - Switching circuit for generating a switch-on signal for battery-powered coin testers - Google Patents

Switching circuit for generating a switch-on signal for battery-powered coin testers Download PDF

Info

Publication number
EP1193656A3
EP1193656A3 EP01250342A EP01250342A EP1193656A3 EP 1193656 A3 EP1193656 A3 EP 1193656A3 EP 01250342 A EP01250342 A EP 01250342A EP 01250342 A EP01250342 A EP 01250342A EP 1193656 A3 EP1193656 A3 EP 1193656A3
Authority
EP
European Patent Office
Prior art keywords
switch element
signal
coin
oscillator
stage
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.)
Granted
Application number
EP01250342A
Other languages
German (de)
French (fr)
Other versions
EP1193656B1 (en
EP1193656A2 (en
Inventor
Bernd Rothe
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.)
Walter Hanke Mechanische Werkstaetten GmbH and Co KG
Original Assignee
Walter Hankemechanische Werkstaetten & Co KG GmbH
WALTER HANKEMECHANISCHE WERKST
Walter Hanke Mechanische Werkstaetten GmbH and Co KG
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
Application filed by Walter Hankemechanische Werkstaetten & Co KG GmbH, WALTER HANKEMECHANISCHE WERKST, Walter Hanke Mechanische Werkstaetten GmbH and Co KG filed Critical Walter Hankemechanische Werkstaetten & Co KG GmbH
Publication of EP1193656A2 publication Critical patent/EP1193656A2/en
Publication of EP1193656A3 publication Critical patent/EP1193656A3/en
Application granted granted Critical
Publication of EP1193656B1 publication Critical patent/EP1193656B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08—Testing the magnetic or electric properties

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Testing Of Coins (AREA)
  • Dc-Dc Converters (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electronic Switches (AREA)
  • Transmitters (AREA)
  • Keying Circuit Devices (AREA)

Abstract

The circuit has an oscillator with a detection coil and a first switch element that outputs the control signal when the coin is inserted. A first stage sets the oscillator working point in the rest state. A second stage has a switch element that acts as a constant current source in the rest state. Its current changes when a coin is inserted depending on oscillator output voltage so the first switch element switches and outputs a switch-on signal. The circuit has an oscillator (1) with a coil for detection coin insertion whose output signal is changed by the coin and a first electronic switch element (Q4) that outputs the control signal when the coin is inserted by changing its control voltage. A first stage (2) sets the oscillator working point in the rest state. A second stage (3) connected to the oscillator output has a second electronic switch element (Q2) and is connected to the first stage so that the second switch element acts as a constant current source in the rest state. The current in the switch element changes when a coin is inserted depending on the oscillator output voltage so that the first switch element switches and delivers the switch-on signal.
EP01250342A 2000-09-29 2001-09-27 Switching circuit for generating a switch-on signal for battery-powered coin testers Expired - Lifetime EP1193656B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10049758 2000-09-29
DE10049758A DE10049758B4 (en) 2000-09-29 2000-09-29 Circuit arrangement for generating a switch-on signal for battery-operated coin validators

Publications (3)

Publication Number Publication Date
EP1193656A2 EP1193656A2 (en) 2002-04-03
EP1193656A3 true EP1193656A3 (en) 2005-02-02
EP1193656B1 EP1193656B1 (en) 2007-12-12

Family

ID=7659030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01250342A Expired - Lifetime EP1193656B1 (en) 2000-09-29 2001-09-27 Switching circuit for generating a switch-on signal for battery-powered coin testers

Country Status (4)

Country Link
EP (1) EP1193656B1 (en)
AT (1) ATE381147T1 (en)
DE (2) DE10049758B4 (en)
ES (1) ES2296704T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025126A1 (en) 2006-09-01 2008-03-06 Research In Motion Limited Integrated dialing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581105A (en) * 1968-09-23 1971-05-25 Bell & Howell Co Switching apparatus
GB2011086A (en) * 1977-10-13 1979-07-04 Skf Uk Ltd Improvements in or relating to inductive proximity detectors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105105A (en) * 1975-10-17 1978-08-08 Libandor Trading Corporation Inc. Method for checking coins and coin checking apparatus for the performance of the aforesaid method
CH676147A5 (en) * 1988-06-17 1990-12-14 Vibro Meter Ag
ATE135860T1 (en) * 1989-05-19 1996-04-15 Festo Kg TEMPERATURE STABLE INDUCTIVE PROXIMITY SWITCH
DE4301530C1 (en) * 1993-01-21 1994-06-30 Nat Rejectors Gmbh Inductive switch-on sensor for battery operated coin validators
CH690950A5 (en) * 1996-06-13 2001-02-28 Optosys Ag Temperature-stabilized oscillator, and using the same in a proximity switch.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581105A (en) * 1968-09-23 1971-05-25 Bell & Howell Co Switching apparatus
GB2011086A (en) * 1977-10-13 1979-07-04 Skf Uk Ltd Improvements in or relating to inductive proximity detectors

Also Published As

Publication number Publication date
DE10049758B4 (en) 2004-07-22
DE10049758A1 (en) 2002-04-18
EP1193656B1 (en) 2007-12-12
EP1193656A2 (en) 2002-04-03
ATE381147T1 (en) 2007-12-15
ES2296704T3 (en) 2008-05-01
DE50113361D1 (en) 2008-01-24

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