DE1022643B - Relay chain circuit - Google Patents

Description

GERMAN

The invention relates to a relay chain circuit in which the chain relays of successive switching stages respond by successive current pulses. The relay chain should be switched on in the Way done that during each pulse pause the chain relay of a previous switching stage in the Rest position is returned.

Known relay chains of this type are designed so that they are used for the pulse-wise switching of the relay chain need special auxiliary relays. These arrangements have the disadvantage of a high requirement for relays and Contacts.

Furthermore, relay chains with a binary switching sequence are known in which special auxiliary relays are avoided through the use of capacitors. These relays chains work in the W ^T else that the chain relay of the individual switching stages are not operated simultaneously with the occurrence of the controlling pulses, but during the intermediate pulse intervals. This mode of operation results from capacitors which are assigned to the individual chain relays.

With this relay chain, the switching steps of successive switching stages appear from the control pulses separated in time. For most of them, however, synchronism between the control and switching impulses is not an issue Switching purposes of relay chains absolutely necessary.

In the case of relay chains of the type described above, these disadvantages are avoided by according to the invention During the actuation time of a chain relay, electrical energy is stored, which after termination of the pulse returns the chain relay of the previous switching stage to the rest position.

This measure has the advantage that the function of one or more auxiliary relays by the chain relay run yourself.

In Fig. 1, an embodiment of the invention is described. When the button T ₁ is closed, the relay A ^T speaks through its winding Λ ^Τ Ι in the following circuit relay chain circuit

Voltage JV 1-1 ^

... O ₁

-T ₁ - earth.

The circuit for relay A is closed with contact n _x. This speaks on in the circuit

Voltage ~ v4 I -M ₁ -H ₁ -T ₁ - earth.

Relay A disconnects the circuit for relay JV with its contact a _s. The relay JV is kept energized by the winding JV II. The windings A II to A ^T II of the relays A to JV are each inductively coupled to the windings A I to JV I. If the excitation circuit of relay A is interrupted by opening button T _1, the voltage induced in winding A II causes a current which in winding JVII

Applicant:

Telefimken GmbH,
Berlin NW 87, Sickingenstr. 71

Dipl.-Ing. Edgar Bader and Otto Kohler,

Backnang (Württ.),
have been named as inventors

of the relay JV is directed so that it drops out. When button T ₁ is closed again, relay B responds in the circuit

Voltage-Z? IA ₁ -M ₁ - T ₁ - earth.

The relay A , which is still holding over the winding A II, is prepared by contact b ₂ ^{for being} thrown off by the next induction pulse. The relay A drops out again when the button T _{1 is opened} . This prepares the response circuit for the next relay in the chain. The relay chain is switched on in the same way. In the chain shown in Fig. 1, after the circuit sequence up to the end relay JV, the relay A will again respond by the first pulse (cyclic chain). The chain can be returned to its initial state by opening button T _2.

Fig. 2 shows a relay chain consisting of remanence relays. It is designed in such a way that after a special stimulus pulse by pressing the T ₂ key, the T key is switched on in a pulsed manner. With the T ₂ key, the relay Λ ^τ is first connected via the winding JV I.

4.0 speak. Due to the remanence effect of its iron circle, it remains in this position even after the key T _{2 has been opened} . If button T is now closed, relay A responds. When the key T is opened, the relay ^! currentless. The relay JV is thrown through the throwing circuit, which is prepared via the contacts a ₂ and n _s , by an induction surge of the relay A. The relay chain is switched on in pulses until the relay M drops out with the last pulse due to the action of the drop winding M III. With key T ₃ the chain can be returned to the initial state.

In the circuit of FIG. 3, the relay chain is after

prepared for the cyclical switching sequence with a one-time incentive by pressing the T _{2 button.} This is done by giving impulses with key T ₁ .

709 849/145

Through the use of rectifiers or capacitors shown in FIGS. 4 and 5, it is possible to to dispense with special discarding circuits. With the mutual coupling of the relays through capacitors is the inductive impulse to throw off the preceding chain relay by discharging a capacitor supports.

FIG. 6 shows the combination of two relay chains of the type indicated above with a counter running in any forward and backward direction. By switching on the button T ₃ , a circuit is formed in which the relay A responds. If the button T ₁ is now closed, relay B responds in the circuit

Voltage-B- ^ ₁ -C ₂ -T ₁ -Earth. * 5

When the button T ₁ is opened, the relay A is thrown off by capacitor discharge and an induction surge. The next time the button T ₁ is closed, the relay C responds, and when the button T ₁ is opened, the ao relay B drops out. If button T ₂ is now closed, the chain relays are actuated in the opposite sequence. So it again speaks to the relay B in the circuit

Voltage -B-c ₃ -i £ ₄ -T ₂ -Earth.

When the button T ₂ is opened, relay C is thrown off.

The relay chains of the type described above can be connected in series that the first relay chain controls the second relay chain by a pulse according to its circuit sequence. This results in the opportunity to set up a counting system. For this purpose you can run forward and backward Relay chains are connected in series, which allows addition and subtraction.

Such a relay chain is shown in Fig. 7. If button T _{1 is} closed, the remanence relay C in the circuit responds:

Voltage-CI- « _x --- · ■ -T ₁ - ^a

40

Relay C makes relay A respond in the circuit

Voltage -j4 1-O ₁ -C ₁ -7 \ -earth.

45

If the button T ₁ opens, the relay C drops out due to an induction surge, since the relays A and C are connected via the circuit j4 HI-C HI-C ₃ -O ₃ . When the button T ₁ is subsequently closed, the relay B is energized via the winding B I. This speaks on in the circuit

Voltage -BI-S ₁ -C ₁ -T ₁ -Earth.

When the button T ₁ is opened, the relay .4 is thrown off by an induction surge from relay B. If the button T ₁ is now pressed again, the relay C responds in the circuit

Voltage -CI-S ₁ -A ₄ -T ₁ -EMe.

The relay -F of the second relay chain is now energized and responds to the circuit

Voltage -FI- ^ ₁ - - ~ - -C ₅ -O ₁ -T ₁ -EMe. /1

Through the relay F , the relay D is connected to voltage and responds to the circuit

Voltage -DI-C ₁ -Jf ₁ -C ₅ -S ₄ -T ₁ -EMe.

When the button T _{1 is opened} , the relays B and F drop out due to the effect of an induction shock. The T. button is used to count down, which takes place just as the count up, which has been described in the T ₁ key. The embodiment of FIG. 7 deals with a two-digit relay chain in a three-way system, the relays A and D corresponding to the number 1, the relays B and E to the number 2 and the relays C and F to the number 0. The second digit can be influenced directly with the T ₃ and T _{1 buttons.}

Claims (11)

Patent claims: 1. Relay chain circuit, in which the chain relays of successive switching stages by successive Respond current pulses, whereby the chain relay of a previous switching stage is returned to the rest position during each pulse pause is, characterized in that during the actuation time of a chain relay electrical Energy is stored, which the chain relay of the previous switching stage after the end of the pulse returns to the rest position. 2. Relay chain circuit according to claim 1, characterized in that the magnetic energy which when the response circuit of a relay is disconnected, the chain relay of a previous one is created Switching stage can drop. 3. Relay chain circuit according to claim 1, characterized in that simultaneously with the control pulse, which actuates a chain relay, a capacitor is charged, which is after the end of the pulse discharges through a winding of the preceding chain relay and causes it to drop out. 4. Relay chain circuit according to claims 1, 2 and 3, characterized in that the windings two successive relays can be mutually influenced by a capacitor in such a way that when switching off one relay, the voltage induced in its winding corresponds to that on the capacitor effective voltage is added, whereby the total voltage acts on the winding of the other relay and lets this fall off. 5. Relay chain circuit according to claims 1 and 2, characterized in that each chain relay apart from the pickup winding has a special dropping winding and that the dropping windings of all Chain relays are arranged in parallel in such a way that when a relay is switched off this via its Drop coil an induction shock in the drop direction on the drop coils of the other relays directs. 6. Relay chain circuit according to claim 5, characterized in that in series with each drop winding a normally open contact of its own relay is arranged. 7. Relay chain circuit according to claims 1 and 2, characterized in that the discarding winding of the chain relay also serves as a response winding and that the relay windings through Capacitors are decoupled. 8. Relay chain circuit according to Claims 1 and 2, characterized in that the drop winding of the chain relay also serves as a pull-in winding and that the relay windings through Rectifier can be decoupled. 9. Relay chain circuit according to claims 1 to 8, characterized in that the circuit arrangement consists of several relay chains and each of these relay chains according to a circuit sequence controls the next relay chain by one step. 10. Relay chain circuit according to claims 1 to 9, characterized in that as a chain relay Relays of normal construction are used and that a relay excited to respond during the subsequent Current break is held by a holding winding. 11. Relay chain circuit according to claims 1 to 9, characterized in that remanence relays are used as the chain relay. Documents considered: German Patent No. 735 425. 1 sheet of drawings