DE753884C - Circuit arrangement for disabling contact bouncing - Google Patents

Circuit arrangement for disabling contact bouncing

Info

Publication number
DE753884C
DE753884C DET48059D DET0048059D DE753884C DE 753884 C DE753884 C DE 753884C DE T48059 D DET48059 D DE T48059D DE T0048059 D DET0048059 D DE T0048059D DE 753884 C DE753884 C DE 753884C
Authority
DE
Germany
Prior art keywords
bouncing
contact
relay
circuit arrangement
winding
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
DET48059D
Other languages
German (de)
Inventor
Fritz Dipl-Ing Appelius
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.)
Telephon Apparat Fabrik E Zwietusch and Co
Original Assignee
Telephon Apparat Fabrik E Zwietusch and Co
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 Telephon Apparat Fabrik E Zwietusch and Co filed Critical Telephon Apparat Fabrik E Zwietusch and Co
Priority to DET48059D priority Critical patent/DE753884C/en
Application granted granted Critical
Publication of DE753884C publication Critical patent/DE753884C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/16Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for conjoint, e.g. additive, operation of the relay

Landscapes

  • Relay Circuits (AREA)

Description

Gegenstand der Erfindung ist eine Schaltüngsänördnurig, durch die durch Prellen eines Kontaktes hervorgerufene Schaltwirkungen unwirksam gemacht werden sollen. Eine derartige Schaltungsanordnung hat Bedeutung in allen Fällen, in denen prellende Kontakte zu Fehlsteuerungen Anlaß geben, z. B. bei Fahrkontakten in Förderanlagen. Das Prellen. des Kontaktes läßt sich aus konstruktiven Gründen häufig nicht vermeiden, so daß Maßnahmen erforderlich sind, durch die die schnell hintereinander folgenden Kontaktschließungen während des Prellvorgangs unwirksam gemacht werden. Wenn der Prellvorgang nur von kurzer Dauer ist und die Kontaktschließungen sehr schnell hintereinander folgen, ist ein Relais mit trägem Anker ausreichend, das durch den Kontakt eingeschaltet wird und den durch den prellenden Kontakt bestimmten Schaltzustand herbeiführt, so daß Fehlsteuerungen ausgeschlossen werden.The invention is a Schaltüngsänördnurig through which Switching effects caused by a contact bouncing are rendered ineffective should. Such a circuit arrangement is important in all cases in which bouncing contacts give rise to malfunctions, z. B. for driving contacts in conveyor systems. The bouncing. the contact can often not be avoided for structural reasons, so that measures are required by which the rapid successive Contact closures during the bouncing process are rendered ineffective. If the The bouncing process is short-lived and the contacts close very quickly one after the other follow, a relay with a sluggish armature that is switched on by the contact is sufficient and brings about the switching state determined by the bouncing contact, so that control errors are excluded.

Die Erfindung ermöglicht nun zum Ausmerzen der unerwünschten Prellwirkungen die Verwendung eines gewöhnlichen Fernsprechrelais. Ein weiterer Vorteil besteht darin, daß die erfindungsgemäße Einrichtung auch bei längeren Prellzeiten und größeren Abständen zwischen den einzelnen Kontaktschließungen arbeitet. Nach der Erfindung wird dieser Vorteil dadurch erreicht, daß das von dem prellenden Kontakt zu steuernde Relais eine zweite parallel zur Arbeitswicklung über einen Kondensator an den Kontakt geschaltete Gegenwicktung besitzt.The invention now makes it possible to eradicate the undesirable bouncing effects the use of an ordinary telephone relay. Another benefit is there in that the device according to the invention also with longer bounce times and larger Intervals between the individual contact closings works. According to the invention this advantage is achieved by the fact that the contact to be controlled by the bouncing Relay a second parallel to the working winding via a capacitor to the contact has switched Gegenwicktung.

Das Ansprechen eines Relais durch Aasschaltung einer Gegenwicklung zu_ .verzögern, ist bereits bekannt: Hierfür ist aber außer dem Arbeitsrelais noch ein Hilfsrelais erforderlich, die beide mit Verzögerungsmitteln auszurüsten sind. Demgegenüber benötigt die neue Schaltung nur ein Relais üblicher Bauart, dessen Gegenwicklung mit einem Kondensator. in Reihe liegt, wobei die vom Rufladestrom des Kondensators durchflossene Gegenwicklung zum- Unwirksammäehen der Kontaktprellungen in vorteilhafter Weise benutzt wird.The response of a relay by switching a counter-winding to_ .delay is already known: In addition to the working relay, this is also required an auxiliary relay is required, both of which must be equipped with delay means. In contrast, the new circuit only requires a relay of the usual type, its Counter winding with a capacitor. is in series, with that of the Rufladestrom counter-winding through which the capacitor flows to ineffectively cause the contact bruises is used in an advantageous manner.

In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt. Mit k ist der zum Prellen neigende Kontakt, z. B. der Fahrrohrkontakt einer Rohrpostanlage, bezeichnet, durch dessen Schließung ein Schaltvorgang eingeleitet werden soll. Durch den Kontakt k wird ein Relais A I/II. zum Anziehen gebracht, das seinerseits die gewünschte Schaltmaßnahme bestimmt. Dieses Relais A I/II besitzt zwei gegeneinandergeschaltete Wicklungen A I und A II. DieWicklung A I ist die Arbeitswicklung des Relais, während die Wicklung A II entmagnetisierend wirken soll. Die entmagnetisierende Wirkung der Wicklung A II dauert jedoch nur so lange, als in den Kondensator C ein Lade-strom fließt. Durch die entsprechenden Bemessungen des Kondensators, der Induktivität und des Ohmschen Widerstandes der Wicktung A II wird die Ladezeit und der Ladestrom des Kondensators C bestimmt. Zweckmäßig wird die Wicklung A II so bemessen, `daß die Amperewindungszahl von A II um den der Amperewindungszahl bei Fehlstrom entsprechenden Betrag größer ist als die Amperewindungszahl von A I. Je größer die Kapazität des Kondensators C ist, desto größer ist die Ansprechzeit des Relais A I/II. Die Ansprechzeit des Relais A I/II wird so bemessen, daß mit Sicherheit der Prellvorgang beendet ist, wenn das Relais A I/II zum Anziehen kommt.In the figure, an embodiment of the invention is shown. With k, the contact that tends to bounce, e.g. B. the tube contact of a pneumatic tube system, referred to, by the closure of a switching process is to be initiated. A relay AI / II. brought to tighten, which in turn determines the desired switching action. This relay AI / II has two oppositely connected windings A I and A II. The winding AI is the working winding of the relay, while the winding A II is supposed to have a demagnetizing effect. The demagnetizing effect of the winding A II lasts only as long as a charging current flows into the capacitor C. The charging time and the charging current of the capacitor C are determined by the corresponding dimensions of the capacitor, the inductance and the ohmic resistance of winding A II. The winding A II is expediently dimensioned so that the number of ampere-turns of A II is greater than the number of ampere-turns of A I. The greater the capacity of the capacitor C, the greater the response time of the relay AI / II. The response time of the relay AI / II is measured in such a way that the bouncing process is definitely over when the relay AI / II picks up.

Claims (1)

PATENTANSPRUCH: Schaltungsanordnung zum Unwirksammachen des Prellens von Kontakten, dadurch gekennzeichnet, daß ein von dem prellenden Kontakt (k) zu steuerndes Relais (A I/II) eine zweite parallel zur Arbeitswicklung (A I) über einen Kondensator (C) an den Kontakt geschaltete Gegenwicklung (A II) besitzt. Zur Abgrenzung des Erfindungsgegenstands vom Stand-der Technik sind im Erteilungsverfahren folgende Druckschriften in Betnacht gezogen worden: Deutsche Patentschrift Nr. 591684; französische Patentschrift Nr. 765 9o3.PATENT CLAIM: Circuit arrangement for rendering the bouncing ineffective of contacts, characterized in that one of the bouncing contact (k) to controlling relay (A I / II) a second parallel to the working winding (A I) via a Capacitor (C) has opposite winding (A II) connected to the contact. For demarcation of the subject matter of the invention from the prior art are the following in the grant procedure Pamphlets have been taken into consideration: German Patent No. 591684; french Patent No. 765 903.
DET48059D 1937-01-21 1937-01-21 Circuit arrangement for disabling contact bouncing Expired DE753884C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET48059D DE753884C (en) 1937-01-21 1937-01-21 Circuit arrangement for disabling contact bouncing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET48059D DE753884C (en) 1937-01-21 1937-01-21 Circuit arrangement for disabling contact bouncing

Publications (1)

Publication Number Publication Date
DE753884C true DE753884C (en) 1953-02-02

Family

ID=7562785

Family Applications (1)

Application Number Title Priority Date Filing Date
DET48059D Expired DE753884C (en) 1937-01-21 1937-01-21 Circuit arrangement for disabling contact bouncing

Country Status (1)

Country Link
DE (1) DE753884C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE591684C (en) * 1934-01-25 Mix & Genest Akt Ges Circuit arrangement for relay delayed in response by a counter-winding
FR765903A (en) * 1932-12-21 1934-06-18 Fuld & Co H Mounting method for electromagnets receiving current pulses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE591684C (en) * 1934-01-25 Mix & Genest Akt Ges Circuit arrangement for relay delayed in response by a counter-winding
FR765903A (en) * 1932-12-21 1934-06-18 Fuld & Co H Mounting method for electromagnets receiving current pulses

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