SU29513A1 - Device for connecting control circles - Google Patents

Description

Nowadays, to connect the control rooms to the direct one, in addition to two selectors, which serve to call the operator of the point where the circles are divided, special selectors are used. In the device according to the invention, the connection and disconnection of the control circles, as well as the call of the operator, is carried out using only one selector.

The drawing shows a diagram of the device.

The selector 7, the windings of which are connected to the line through a capacitor, has two working contacts 9 and 10, of which the first serves to call the operator and the second to connect the circles using the relay 6. The ringing bell 3 is connected between the insulated contact 8 and one of the poles 4 batteries with another pole connected to contact P. Current pulses sent to call the operator drive the selector /, and the latter is set at contact 9, closure the following circuit: battery 4, contact 9, selector dial 2, isolated contact 5, bell 3. In this case, bell 3 comes into action, at the same time through the line charging capacitor 12, with

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initiating call control. Thus, to close the bell circuit, it is necessary to connect the disk 2 with both pins 8 and 9. The control circles are connected by sending another combination of pulses. In this case, the dial 2 of the selector 1 is electrically connected to the contact W and turns on the relay b in the battery circuit 7 /. Relay 7 comes into action and its core 7 closes the contacts a, b, c, d, thereby connecting the dispatch circles.

Capacitor 5 serves to separate the dc circuits. The pulses sent to connect the circles are calculated so that the last pulse return drive brings the disk to the connection with pin 10 and leaves the selector in this position. To separate the circles from the special premise of the current is not required, for the separation will occur at the moment when either side sends the first ringing current impulse no matter which direction. This impulse will be for the selector, who is in working condition, returning the impulse, due to which contact 10 will be opened, and, therefore, the circles will be disconnected.

The subject matter of the invention.

Device for connecting dispatch circles, characterized in that, in order to use one selector for connecting and disconnecting control circles and for activating an operator’s call, a battery call is connected at one end to the isolated contact 8 of the selector mechanism and the other to the fixed contact I a the selector dial serves as a conductor through which the bell is activated to eliminate dialing when dialing a plant with a large number of pulses, and the selector is turned on so that The last return pulse is the closing contact JO, whereby the selector remains in the operating position until the next single ring of the ring current to disconnect the circles.