805,984. Saturate reactors; automaticexchange systems. TELEFONAKTIEBOLAGET L. M. EBICSSON. Jan. 17, 1957 [Jan. 18, 1956], No. 1849/57. Classes 40 (4) and 40 (9). The number of turns on the windings in Fig. 2, are such that the amount of current required to magnetize the core Tk fully from - Br in the hysteresis loop of Fig. 1 to +Br shifts the loop of DM only one step, say from - Br to a. The windings D1-Dn are such as to be wholly magnetized when DM makes one step -n steps as the case may be. When impulsing is to start contacts k1 close. A train of impulses then operates contacts k2, k3, k5 an appropriate number of times, relay IR maintaining k4 closed for the duration of the train. At the end of each impulse rectifier LS passes a magnetizing current to the register winding DM which carries the magnetization one step from the zero value - Br, Fig. 1, nearer the value +Br. When the number stored in DM is to be read contacts k6-k8 are closed and reverse current is applied to DM. Demagnetization then occurs, the reverse current being simultaneously applied to reading windings D1-Dn, in parallel. According to the number of impulses registered in DM so an equal number of the cores D1-Dn is saturated. As soon as the core of a reading winding, say D1, is saturated the current through this winding increases sharply so blocking rectifier LH1. A current impulse then flows through the primary of transformer T1 and relay R1 to fire glow discharge tube Gl. The cathode potential of G1 then increases to block rectifier L1. As soon as DM is saturated negatively rectifier LHR is blocked, current flows through transformer TR and tube GR fires. Rectifier LR is thus blocked and current through the unsaturated reading coils is stopped. The number of impulses registered is now represented by the last of the relays R1-Rn, to be operated. The circuit is restored to normal by reversal of contact k9. Modifications. Reading may be effected by saturating the winding DM in a +ve direction, the number of unsaturated read windings then representing the number of registered impulses. The gas tubes G1-Gn, GR may be replaced by transistors.
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机译：805,984。饱和反应器;自动交换系统。 TELEFONAKTIEBOLAGET L. M. EBICSSON。 1957年1月17日[ [1，18956年]，第1849/57号。 40（4）和40（9）级。图2中绕组的匝数使得将铁心Tk完全磁化所需的电流量从图1的磁滞回线中的-Br变到+ Br，仅使DM回路移动了一步，即从-Br到a。 DM视情况而定，步进D-Dn会使绕组D1-Dn完全磁化。当要启动脉冲时，触点k1闭合。一系列脉冲然后将触点k2，k3，k5操作适当的次数，继电器IR在整个过程中保持k4闭合。在每个脉冲整流器LS的末端，有一个励磁电流流向寄存器绕组DM，该寄存器绕组从图1的零值-Br开始，向接近+ Br的位置进行了一级磁化。当要读取存储在DM中的数字时，触点k6-k8闭合，并且反向电流施加到DM。然后发生退磁，反向电流同时并行施加到读取绕组D1-Dn。根据在DM中记录的脉冲数，使相等数量的磁芯D1-Dn饱和。一旦读取绕组的磁芯（例如D1）饱和，通过该绕组的电流就会急剧增加，从而阻塞整流器LH1。然后，电流脉冲流经变压器T1的初级线圈和继电器R1，以触发辉光放电管G1。然后，G1的阴极电势增加以阻断整流器L1。一旦DM饱和，整流器LHR就会被负向阻塞，电流就会流经变压器TR，并且会点燃电子管GR。整流器LR因此被阻塞并且流过不饱和读取线圈的电流被停止。现在记录的脉冲数由要操作的最后一个继电器R1-Rn表示。通过接点k9的反向使电路恢复正常。修改。可以通过使绕组DM在+ ve方向上饱和来实现读取，不饱和读取绕组的数量则表示配准脉冲的数量。气管G1-Gn，GR可以由晶体管代替。
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