DE581028C - Switching method for incandescent lamp image presentation devices with relays controlled by a film strip and excited by light-sensitive cells - Google Patents

Switching method for incandescent lamp image presentation devices with relays controlled by a film strip and excited by light-sensitive cells

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Publication number
DE581028C
DE581028C DER81949D DER0081949D DE581028C DE 581028 C DE581028 C DE 581028C DE R81949 D DER81949 D DE R81949D DE R0081949 D DER0081949 D DE R0081949D DE 581028 C DE581028 C DE 581028C
Authority
DE
Germany
Prior art keywords
light
switching method
sensitive cells
excited
incandescent lamp
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
DER81949D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DER81949D priority Critical patent/DE581028C/en
Application granted granted Critical
Publication of DE581028C publication Critical patent/DE581028C/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Description

Schaltverfahren für Glühlampenbildervorführungseinrichtungen mit von einem Filmband gesteuerten, durch lichtempfindliche Zellen erregten Relais Will man zwecks Vorführung von Bildern, die aus aufleuchtendem. Lampen eines Lampenfeldes gebildet werden, dieses Lampenfeld durch einen Film mittels lichtempfindlicher Zellen (Photozellen) steuern, so ist zur Umwandlung der Stromschwankungen, die in der lichtempfindlichen Zelle durch die wechselnde Lichtdurchlässigkeit des Films hervorgerufen werden, in Starkströme, welche Glühlampen zum Leuchten bringen können, die Zwischenschaltung von Relais nötig, sei es in Form von Verstärkerröhren, sei. es in Form von magnetelektrischen. Relais. Bei den magnetelektrischen Relais, bei :denen die Änderung des von der lichtempfindlichen Zelle hindurchgelassenen Stromes die Bewegung 'der Teile ,eines Kontaktes hervorruft, durch die !ein stärkerer Strom geöffnet oder geschlossen wird, macht sich infolge von Funkenbildung bald ein Verschmoren der Kontakte bemerkbar.Switching method for incandescent image demonstration devices with from a film tape controlled, light-sensitive cells energized relays Will one for the purpose of showing pictures that are made of flashing. Lamps of a lamp field This lamp field is formed by a film using light-sensitive cells (Photocells) control, so is to convert the current fluctuations that are in the light-sensitive Cell caused by the changing light permeability of the film, in high currents, which can make incandescent lamps glow, the interconnection of relays, be it in the form of amplifier tubes. it in the form of magneto-electric. Relay. In the case of magneto-electric relays, in which the change of the light-sensitive The current passed through the cell causes the movement of the parts, of a contact, through which a stronger current is opened or closed, is made as a result from spark formation, scorching of the contacts is soon noticeable.

Gemäß der Erfindung wird dies dadurch vermieden, daß durch einen Unterbrecher der ganze Strom, der durch eine Gruppe von Relais fließt, unterbrochen wird, kurz bevor das Relais seinen Kontakt öffnet und geschlossen wird, kurz nachdem die durch den Film gesteuerten Kontakte sich geschlossen haben; :die Bewegung der Kontäktteile soll in. einer kurzen Periode der Stromlosxgkeit erfolgen. Das Öffnen und Schließen im Unterbrechererfolgt im geeigneten Augenblick synchron mit der Bewegung des Films. Der Unterbrecher selbst kann als rotierender unterbrochener Metallzylinder nach Art des Kollektors elektrischer Maschinen oder auch als Abreißkontakt gebaut -sein, der durch leine Exzentersteuerung o. dgl. geöffnet und geschlossen wird.According to the invention this is avoided in that the entire current flowing through a group of relays is interrupted by a breaker shortly before the relay opens its contact and is closed shortly after the contacts controlled by the film have closed; : the movement of the contact parts should take place in a short period of no current. The opening and closing of the breaker occurs at the appropriate moment in synchronism with the movement of the film. The interrupter itself can be built as a rotating metal cylinder interrupted by way of the collector of electrical machines, or as arcing - be the leash o by eccentric control or the like is opened and closed...

Wie die Zeichnung beispielsweise zeigt, zieht ein Magnet M, wenn seine Wicklung:S durch seinen stärkeren Strom durchflossen wird, die Feder F an, wodurch der Kontakt l( geschlossen- wird, Der Unterlirecher U muß nun so eingestellt sein, daß in dem Augenblick, in dem die lichtempfindliche Zelle Z einen stärkeren Strom zu liefern beginnt und die Feder F heruntergeht, die Stromzuführung an Unterbrecher U einer nichtmetallischen (in :der Zeichnung weißen) Stelle. gegenübersteht. Wenn dann beim Weiterdrehen des Unterbrechers U hier der Hauptstrom geschlossen wird, findet dieser ruhende, entweder offene oder geschlossene Kontakte vor, durch welche ,er den Weg zu den Lampen-findet, deren Aufleuchten beabsichtigt ist. Kurz bevor der Film weiterspringt und die Relais umschaltet, ist durch die Drehung von U schon die nächste nichtmetallische Stelle unter die Stromzuführung gelangt. Der gesamte Strom wird unterbrochen und die Neueinstellung der Kontakte geht in stromlosem Zustande vor sich. Da der stromlose Zustand nur die kurze Zeitspanne umfaßt, während der der Film weiterspringt, wird eine Verdunkelung einer Glühlampe, die durch mehner:e Perioden leuchten soll, dem menschlichen Auge nicht sichtbar.As the drawing shows, for example, a magnet M attracts when its Winding: S is traversed by its stronger current, the spring F on, whereby the contact l (is closed, the lower tube U must now be set so that that at the moment when the light-sensitive cell Z has a stronger current starts to deliver and the spring F goes down, the power supply to the breaker U a non-metallic (in: the drawing white) point. facing. if then the main current is closed when the interrupter U continues to turn, does this find dormant, either open or closed contacts, through which , he finds his way to the lamps that are intended to light up. Shortly before the film jumps on and switches the relay, is already by turning U the next non-metallic point comes under the power supply. The whole The current is interrupted and the contacts are reset in a de-energized state in front of you. Since the de-energized state only includes the short period of time during which The film continues, a light bulb is darkened, which is caused by mehner: e Periods should shine, not visible to the human eye.

Claims (1)

PATENTANSPRUCH: Schaltverfahren für GlüMampenbildervorführungseinrichtungen niit von einem Filmband gesteuerten, durch lichtempfindliche Zellen lerregten Relais, dadurch gekennzeichnet, .daß das Filmband einen 0.m Lampenstromkreis angeordneten-, z. B. als Kollektor ausgebildeten Unterbrecher und die Relais asynchron steuert, derart, daß dien Unterbrecher die Lichtleitung zeitlich vor dem Schließen bzw. Öffnen der Relais= kontakte zwecks Vermeidung von Funkenbildung stromlos macht.PATENT CLAIM: Switching method for glow lamp image demonstration devices relays not controlled by a film tape and energized by light-sensitive cells, characterized in that .that the film tape arranged a 0.m lamp circuit, z. B. designed as a collector breaker and controls the relay asynchronously, in such a way that the interrupter interrupts the light line in time before closing or opening the relay = de-energizes contacts to avoid sparking.
DER81949D Switching method for incandescent lamp image presentation devices with relays controlled by a film strip and excited by light-sensitive cells Expired DE581028C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER81949D DE581028C (en) Switching method for incandescent lamp image presentation devices with relays controlled by a film strip and excited by light-sensitive cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER81949D DE581028C (en) Switching method for incandescent lamp image presentation devices with relays controlled by a film strip and excited by light-sensitive cells

Publications (1)

Publication Number Publication Date
DE581028C true DE581028C (en) 1934-06-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DER81949D Expired DE581028C (en) Switching method for incandescent lamp image presentation devices with relays controlled by a film strip and excited by light-sensitive cells

Country Status (1)

Country Link
DE (1) DE581028C (en)

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