DE973221C - Device for the generation of rows of counted dialing currents - Google Patents

Description

ISSUED DECEMBER 24, 1959

T 7536 VUlφιa *

Willi Tiede, Lüneburg

has been named as the inventor

Willi Tiede, Lüneburg

It is a device for generating series of counted polling surges for decadal voting has been proposed by means of adjustable electric number switches, in each case the beginning of the elective current surges emitted by a constant pulse shape and pulse length only approximately depends on the duration of the electoral surge criterion. This criterion will given by a timing circuit, which is one of the number of time levels corresponding, not essential number of discharge resistors in excess of ten and a single common capacitor exists, the capacity of which is uniformly high for all pulse numbers occurring electrical charge state discharges.

The invention relates to a simplified development of this device. According to the invention obtained the timing device according to the time value to be set or the number of times to be sent Dialing impulses the desired time constant by means of individual resistors that can be set using buttons or switches, and the resistance set in each case is only dependent on the transmitted pulses switched on during the duration of the individual power surges, such that the time constant of the timing circuit in the rhythm of the impulses between the desired and a large constant Value changes.

The change between two time constants has the advantage that the timing circuit is also used when Voltage fluctuations always send out the correct number of dialing pulses as the desired one Setting by the switching element characterizing the number of pulses, for example the straight one corresponds to the pressed key.

In addition to mechanical number switches, there are also mechanical number switches to generate rows of counted dialing currents Relay counter and capacitor counter load

909 675/17

knows. While the mechanical number switches are only suitable for less frequent dialing and the individual impulses because of the decreasing spring tension and changed running conditions in the centrifugal governor are often of different lengths and change slightly over time, are relay counters and capacitor counter due to the technical complexity of these devices special; expensive to purchase and require some maintenance and high precision in setting.

In the case of the known capacitor encoders, one is dependent on the desired number of pulses Charging energy corresponding to the duration of the pulse series is supplied to the capacitor. Such an order requires a high level of constancy of the charging voltage, which is only relatively expensive Means is to be achieved. In the invention, the amount of charge supplied to the capacitor is independent on the duration of the series of impulses to be sent out later, this is rather determined by the various Discharge resistances are determined, so that the arrangement according to the invention has significantly lower requirements to the constancy of the supply voltage. It should be noted that it is known, one in two Variable drop-out delay of a relay by switching on and off an additional resistor to reach the already existing discharge resistance. However, such an arrangement serves not the generation of series of counted elective surges.

If it succeeds, the time constant of the holding circuit of the timing relay alone is very large, even as infinite as possible to be made large so that charges do not flow from the capacitor C 2 during the pulse pauses can, it is possible by the circuit according to the invention, the waste moment for the Z relay to be defined very precisely, d. H. definitely but so precisely that even with larger voltage fluctuations and resulting more or less large amounts of charge, the number of impulses corresponds exactly to the key setting. There is no need therefore, a voltage constant maintenance for this circuit to be provided. Furthermore, relays and other switching means are saved, so that the Number switch gets by with a particularly small amount of switching elements and is cheap the acquisition and operating costs.

The device according to the invention is set up for immediate digit sequence, ie the transmission of dialing pulses immediately after the key is pressed, but can also be switched to indirect dialing current by means of the special stimulus pulse capacitor. In this case, the series of selection currents is only sent out when the switch Üh is released.

In the drawing, an embodiment of the simplified electrical number switch according to the invention is shown schematically in the circuit diagram. It contains: the relay E, the pulse relay / and the numeric sequence relay Z, furthermore the buttons Tx ... To with the associated resistors Wi χ which determine the time constant. .. Wi ίο. Cz is the capacity of the timing circuit, RW3 the rheostat for setting the holding current of the iT relay. Ci is the capacity of the switch-on circuit, the charging current of which causes the Z relay to respond for the first time, as is necessary for indirect current impulses. The relays E and / and the associated resistors RWx and RW 2, Wixx and Wi 12 together form the relay interrupter, the duration of which depends on the response time of the Z relay.

In detail, the dialing process takes place with a direct sequence of digits, provided that the switching points 2 with 3, 4 with 6 and 5 with 7 are connected as follows:

After the switching points 2-3, 4-6 and 5-7 have been connected and the battery voltage and the grounded pole have been applied, the capacitor Ci is short-circuited by the valve spring set Üh (minus, Ci, point 6-4, 5-7- ^ 14, minus). When the number key Γ 5 is pressed, the capacitor Ci sends a charging current surge to the S relay winding 1-2, plus point, via the valve spring set Üh point 6-4-3, AT zx. The 2i relay responds briefly. The capacitor C 2 is fully charged via the contact ζ III and e IV and at the same time the Z relay is fully excited via the winding 1-5 by the current flowing via the contact 2V2. The Z relay responds. The contact ζ V 2 removes the short circuit for RW 3 , so that the e IV contact has no effect during the dialing process. The relay Z receives its holding current from the capacitor C 2 and via the resistor RW 3. The contact ζ III simultaneously switches the occupancy lamp Bl and the pulse relay set, ie the relays / and E; one who will work alternately from now on. After the / relay has responded five times, capacitor C 2 is discharged so far via contact i III1 and the pressed number key Γ 5 and resistor Wi 5 that the Z relay releases its armature. Contact ζ III switches off the voltage from the relay interrupter and the occupancy lamp. The contact ζ V ι removes the short circuit for the .Ε relay so that it immediately drops its armature after the election has ended.

When working with indirect digit sequence, the switching points 2-5, 4-6 and 3-7 are connected. When the number key Γ 5 is depressed, the key flaps bridging all the spring sets of the number keys actuate the flap spring set Üh, which discharges and short-circuits the capacitor Ci via the resistor Wi 14 (minus, Ci point 6-4, 3-7, Wi 14, minus) . If the numeric key is released, the ÜÄ contact returns to the rest position, and the 2? Relay receives a charging current surge from the capacitor Ci and responds briefly, whereupon the rest of the process takes place as with the direct current surge.

Claims (4)

PATENT CLAIMS: i. Device for the generation of series of counted dialing currents, each of which starts the elective current impulses of only approximately the duration of the electoral stream push owning criterion depends, which is given by a timing circuit that from a number that corresponds to the number of time levels and does not significantly exceed ten consists of discharge resistors and a single common capacitor, its capacitance differs from an electrical state of charge that is uniformly high for all pulse numbers that occur discharges, characterized in that the timing device according to the to be set Time value or the number of dialing pulses to be transmitted using buttons or switches adjustable individual resistors receives the desired time constant, and the respectively set Resistance as a function of the transmitted impulses only for the duration of the individual Power surges is switched on, so that the time constant of the timing circuit in time with the Pulses between the desired value and a relatively large, constant value changes. 2. Device according to claim i, characterized in that that the pulse switching of the time constants from the pulse relay of the relay interrupter is made. 3. Device according to claim 1 or 2, characterized in that only the holding circuit in the timing device consists of switching elements, which have a large, in borderline cases an approximate have an infinitely large time constant. 4. Device according to claim 1 or the following, characterized in that the time measuring device in addition to the time constant according to claim 3 which is determined by one of the resistors Γι ... To second time constant is only impressed during part of the pulse length. Considered publications: German Patent No. 697 625;
H. Petzoldt: »The telecommunication relay and its circuit,?, 1951, p. 28. Legacy Patents Considered:
German Patent No. 969 863. 1 sheet of drawings 909 675/17 12.59