DE690401C - Circuit arrangement for coin telephones with automatic charge control in the office - Google Patents

Description

Circuit arrangement for coin operated telephones with automatic charge control in office The invention relates to a circuit arrangement for coin operated telephones which the fee control through the coin contacts assigned to the individual coin types is brought about automatically, which through the mediation of auxiliary elections in one the Control the total of the inserted amount characterizing charge selector, whose Setting value with the zone value of the produced zone determined by a tracking selector Connection is compared. In the previous circuits, such a thing will come out Charge selector and tracking selector Existing money zone test set for several coin operated telephones assigned, as the money zone check rate is only required temporarily before the start of the call will. When the zone value of the connection is determined from several Ken0.1 digits must, accordingly, several tracking selectors are required. Also for the control of the toll selector, a number of auxiliary dialers are required through which the conversion and summation in coin units when a higher value coin is inserted will. The great expense of switching devices is permissible when in the telephone exchange a larger number of payphones are connected, as for the large number Pay phone only a few money zone test kits need to be provided. In small offices with one or two payphone connections, however, is the effort of switching devices for the usual money zone test sets.

In such cases, the invention aims to reduce the cost of switching devices for the money zone test set, which can be individually assigned to the payphone given the small number of coin-operated telephone connections. Is achieved: this according to the invention in that the one fee selector at the beginning of the election the setting values of the; other fee selector takes over with simultaneous conversion into coin units, while the other fee selector runs home and is used as a follower for later selection levels. In the drawing, only the switching devices required for the fee control are shown: Two money contacts glö -und g50 are provided in the coin-operated telephone, of which the contact glo when an i o- * J piece is inserted and the contact g50 when a 5o-gg is inserted / -Piece temporarily close. Money can be inserted before or after the handset is lifted. When an i o, 9 / 7f piece is thrown in, the relay Xlo and when a 5o-A # piece is thrown in, the relays Xlo and X50 are temporarily activated. Each time the relay Xlo is pulled in , the toll selector magnet GWM is excited via the contact i x; so that the contact arm GW is advanced by one step. When the relay X50 is pulled in, the demagnet MWM is excited via the contact x50, so that the contact arms MW I, MW II, MW I II move one step forward: Assuming there are two i o apple pieces and two 5 o -Apf-pieces thrown in the apparatus preparatory, then the contact arm GW is initially on step q., The contact arm _MW I -on step 2. After lifting the flörer, the line loop is closed via HU , so that the relays A and B pick up . The relay X does not attract its armature -_, however, since the windings, n X, 01 and Xlo II are excited in the opposite direction with loop current. When relays A and B are excited at the same time, the line loop for the connection dialers, which are connected to the line behind the capacitors C1 and C2, is closed in a manner not shown: If after lifting the receiver, the contact g'io is thrown in .an io- J? / R piece is temporarily turned over, the relay A remains energized via its winding AI, while relay B temporarily drops out without any effect. The release delayed relay V is energized via contact ib. When the dial expires, the contact nsi causes relays A and B to drop in the rhythm of the dialing current surges. As soon as the first digit is dialed, relays D and W are energized via earth, i v, 2a, DJ, W, battery. The relay D is connected via the winding D @ II and its own contact 2 d depending on the relay V via contact 2 v: Through the contact i @d, the relay R is attracted in the following circuit _: Earth, id, kwm, NW II, 2t7, R, battery.

The rotary magnet HWM of the follower HW is attracted by the contact 3, r, so that the contact arm. NW II leaves the zero position. When the magnet HWA, 1 is attracted, the circuit for the relay R is interrupted by contact / zwm. The relay R and the magnet HWM work with each other as long as: as a self-breaker until the contact arm NW II reaches its zero position again. The contact HW I brings the relay P for tightening when the contact arm H'W I sweeps through step 28: earth, i, d, r 2, NW I step 28, MW I Step 2, PI, battery.

The relay P binds itself via the winding P II and its own contact 3 P depending on relay V. From this moment on, the charge selector GW runs in the same rhythm as the auxiliary selector HW, since the rotary magnet is via earth, ir, ip, GWM, battery CrlVAVl is excited. The contact steps of the contact arm MW I are each connected to the fourth step of the contact arm NW I. Until the rest position is reached, the selector NW therefore runs eight steps from step 28 to step o, ie the charge selector GW is adjusted by eight steps.

In the assumed example, two So-W / 7 / pieces were thrown in, - which correspond to ten coin units each. Already when throwing in the 50 &# pieces if the rotary magnet GWM was attracted twice by the contact i x, 0, so that for the desired adjustment by ten steps only eight steps for the Charge selector GW are required. When pulling the relay) o was simultaneously the rotary solenoid MWM of the switching mechanism serving as a tracking selector and fee selector Started in the following circuit: Earth, relay interrupt RU, MW II Step i to 35, 411, 2t, MWM, battery.

As soon as the KöntaktarmMWII reaches step o, the relay T picks up: The relay T binds itself via the winding T I1 and its own contact i i. When the first code number was dialed, relays W and D had picked up. After the end of the first series of polling currents, the relay W drops out with a delay; while relay D is still energized via winding D II. Over earth; id, 2w, lt; I, battery responds to relay 1 <. When the second code number is selected, the rotary magnet MWM is now in the rhythm of the elective current surges over earth, i k, i a; MWM, battery energized.

It is assumed that the network group connections are identified by a 9 in the first place. The selector W1 is to be adjusted by the relay A in a manner not shown by the empty polling current impulse series. As already explained, the second series of election surge acts on the voter MW. If the position of the contact arm MW III coincides with the position of the charge selector GW, the connection is made in a known manner; otherwise the connection is disconnected. When the receiver is hung up, relay B and thus relay V drop out, so that relay D; P, I (, T fall off.

Claims (1)

PATENT CLAIM: Circuit arrangement for coin-operated telephones with automatic charge control in the office by means of several charge selectors assigned to the individual types of coins and controlled by money pulses, the setting values of which are transferred to a summing dial for comparison with the zone value of the connection established, which is determined by the tracking dialer, characterized in that , which one charge selector (GW) takes over the setting values of the other charge selector (MW) at the start of dialing with simultaneous conversion into coin units, while the other charge selector (MW) runs home and is used as a tracking selector for later selection levels.