CS218628B1 - Pulse dial transmitter connection - Google Patents

Abstract

The connection of the pulse dialing push-button transmitter according to the invention, by simple means, limits the active mode time of the pulse dialing circuit to the time necessary for sending dialing pulses and thus ensures a defined state of the pulse dialing circuit outputs during the entire operation time of the pulse dialing push-button transmitter.

Description

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BACKGROUND OF THE INVENTION The present invention relates to the use of a pushbutton transmitter and pulse dial for a suitable end telecommunication device instead of a rotary dial consisting of a bridge rectifier, a masking switching circuit, a pulse switch circuit, a button block, a pulse generator, a voltage converter, circuit-pulse pulses. and a direct dial circuit. Of the many well-known pushbutton dial transmitter connections, the most important are connections that use pulse selections to create pulse selections. From the outputs of these circuits, the switching circuits for transmitting the pulses of the subscriber line and the switching circuits for disconnecting or shorting the speech circuit during pulse pulses are controlled. For resetting the registers and initial setting of the pulse circuit, a reset pulse must be applied to its reset input before starting the selection. The purpose of this purpose is to switch the flip-flop circuits, which are flipped over with the time delay after reaching the required supply voltage. The zero pulse generated in this way is brought to the reset circuit of the pulse circuit and the circuit is brought into active mode. Upon completion of the pulse pulses, the flip-flop rewinds, thereby generating a reset pulse for the pulse circuit with a delay of some time after the voltage drop for the pulse circuit is dropped. Thus, there is a state where the pulse dial circuit in the active mode and the power supply voltage are insufficient, resulting in an undefined state of the pulse dial circuit outputs.

The aforementioned drawback is solved by the connection of the pulse dial transmitter of the invention.

The essence of the invention is that one input of the reset pulse circuit is connected to the masking output of the pulse circuit and the first input of the switching circuit, the second input of the pulse circuit is connected to the write input of the pulse circuit, the second input of the switching circuit and the write output of the button the output of the reset pulse circuit is coupled to the reset input of the pulse dial circuit. The advantage of connecting the present invention is that, by simple means, it defines the time-active mode of the pulse pulse circuit required to send dialing pulses, thereby providing a defined pulse circuit output status for the entire pulse button transmitter operation.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be further elucidated with reference to the accompanying drawing, in which the block diagram of the push button transmitter is a pulse of the invention. To the output terminals 111, 112 r of the attenuator 1, a masking circuit 2 is connected in series with terminals c, d for connecting the circuit 218628 of the speech circuit. The second output 23 of the masking circuit 2 is connected to the pulse circuit 3 at the first input 32 while the second input 31 is connected to the second output terminal 112 and its output 33 is connected to the first input 52 of the voltage converter 5 whose first output 51 is connected to the first output terminal 111. Its second output 53 is connected to the second output 43 of the button block 4 and its third output 54 is connected to the second input 152 of the pulse circuit circuit 15. The first input 42 of the button block 4 is connected to the second output terminal 112, the first one. output 41 is coupled to first output terminal 111 of bridge rectifier 1. Second input 45 is coupled to code inputs 157 of pulse dial circuit 15 whose write input 154 is coupled to third output 24a simultaneously with second input 44 of pushbutton block 4. The pulse output 155 of the pulse dial circuit 15 is coupled to the second output 23 and simultaneously to the second input 32 of the switching circuit 3. The fourth output 25 of the masking circuit 2 is connected to the masking output 153 and simultaneously to the control electrode of the third transistor 14a simultaneously with the connector of the second pin 8 resistor. of transistor 13 in the zero pulse circuit 16.

The first input 161 of the reset pulse circuit 16 is coupled to the first output terminal 111 of the bridge rectifier 1, its second input 162 being connected to the second output 53 of the voltage exchanger 5. Output 165 is connected to the circuit of the pulse option 15.

The control electrode of the first transistor 12 in the reset pulse circuit 16 is coupled to the write input 154 of the pulse circuit 15. The coil of this transistor is coupled to the control electrode of the second transistor 13 and simultaneously via a second resistor 7 to the line between the zener diode 11 and the first the resistor 6 as well as the capacitor 10, the second terminal of which is connected to the second terminal of the first resistor 6, the emitters of all transistors 12, 13, 14 and the first output terminal 111 of the bridge rectifier 1. The collector of the second transistor 13 is connected to the base of the third transistor 14 , with the cam output 153 and through the third resistor 8 with the zener diode diode 11 and the fourth resistor 9. The third transistor 14 connector is connected to the reset input 156 of the pulse dial circuit 15 and through the fourth resistor 9 to the third resistor 8 and the zener diode 11.

The bridge rectifier 1 ensures the correct voltage of the supply voltage for the control and control circuitry of the pulse dial transmitter and the speech circuit, the masking circuit 2, which disconnects the speech circuit during transmission of the pulse selection, the pulse switching circuit 3 which connects the clock pulse generator and the on / off converter and emits dialing pulses to the subscriber line, button block 4, which controls the pulse dial circuit, clock generator, and voltage converter 5, which

Claims (2)

4 provides a dynamic control of the pulse circuit and a unidirectional power supply to the pulses and pushbutton circuit. The pulse dial circuit 15 is an integrated pulse circuit which, by its pulse output155, emits dialing pulses with a preselected frequency, a pulse ratio, and a sub-gap, corresponding to the code combination transmitted to the circuit inputs from the button block 4, and the mask output 154 disconnects the call circuit during the dialing option . The reset pulse circuit 16 provides initial resetting and setting of pulse dial circuit 15 to active mode. The pulse dial push-button transmitter is connected to the input terminals a, b for subscriber line, and a speech circuit is connected to its output terminals c, d. Upon connection, the subscriber line switches on a masking circuit 2 which, through its output 22, connects the call circuit to the subscriber line and simultaneously blocks its pulse switching circuit 3 by its second output 23, which outputs 33 the clock pulse generator and the voltage converter 5 of the subscriber line. After receiving the notification signal by the speech circuit, it is possible to start with the dialing of the subscriber number. The wiring operates in a negative logic, with the reference point being the positive terminal 111 of the bridge rectifier 1. By pressing any button of the button block 4, a code combination corresponding to the pressed button and the log is set to the code inputs 157 of the pulse circuit 15 circuit. 0 on the output 44 of the button block 4, the masking circuit 2 is blocked. . The clock pulse amplitude is proportional to the voltage magnitude at the output 53 of the voltage object. A pulse dial pushbutton transmitter connection characterized by the fact that one input (163) of the circuit pulse pulses (16) is coupled to the camouflage output (153) of the pulse dial circuit (15) and the camouflage switch circuit (2) input, the second input (164) the reset pulse circuit (16) is coupled to the write input (154) of the pulse dial circuit (15), the input (24) of the switching circuit (2) and the write output (44) of the button block (4) and the output (165) the reset pulse circuit (16) is coupled to the reset input (156) of the pulse circuit (15). 2. The wiring according to claim 1, characterized in that the reset pulse circuit (16) consists of a converter 218628 5. While the output voltage is a smaller acosener voltage of the zener diode 11, the fourth transistor 14 is open, the output 165 is level; 0, the pulse dial circuit 15 is in passive mode and zeroed. Once the voltage at output 53 of the voltage converter 5 exceeds the zener voltage diode 11, the second transistor 13 is opened with the time delay given by the second resistor 7 and the capacitor 10, which closes the third transistor 14. Level log. 1 at output 165, the pulse dial circuit 15 enters active mode. Level log. On the write input 154 of the pulse circuit, the code combination corresponding to the pressed button is written. A levellog appears on the mask output «153 of the pulse dial circuit 15. 0, thereby disconnecting the call line and closing the transistor 14 i when the push button is released. Level log. 1 at the write output 44 of the button block 4, the first transistor 12 opens and closes the second transistor 13. The termination of the pulse pulses passes the output 153 of the pulse circuit 15 to log.1, the fourth transistor 14 opens, the output 165 of the pulse circuit 16 goes over to log. This level is transmitted to the reset input 156 of the pulse dial circuit 15, which is then energized! passive mode with defined output levels 153 and 155. This is precisely the active mode of the pulse dial circuit! 15. Level log. 1 on the masking output 153 of the pulse dial circuit 15, the masking circuit 2 unlocks, thereby reconnecting the speech circuit to the subscriber line. Output 23! the switching circuit 2 blocks the pulse switching circuit 3, which disconnects the line loop generator of the clock pulses and the voltage converter 5. The entire device is in call operation. The connection of the push button transmitter according to the invention can be used, for example, in telephones, telescopes, control desks, and wherever the rotary dial is used. DISCLOSURE OF THE INVENTION Four supports (6, 7, 8, 9), a capacitor (10), a Zener diode (11), and three transistors (12, 13, 14), wherein the positive supply terminal (161) of the peripheral pulse (16) is coupled to with a first terminal of the first resistor (6), the first condenser terminal (10) and the emitters of the three transistors (12,13,14), the negative supply terminal (162) of the reset pulse circuit (16) is connected to the anode of the Zener diode (11) and the first terminals of the third resistor (8, 9), the second terminal of the first resistor (6) is connected to the first resistor terminal (7) and the cathode of the Zener diode (11), the second terminal I of the fourth resistor (7) is connected to the second outlet! the capacitor (10), the collector of the first transistor! (12) and the control electrode of the second transistor I 21218628 with the control electrode of the first transistor (12), the output (165) being connected to the collector of the third transistor (14) and the second terminal of the fourth resistor (9). (13), the first input (163) is connected to the collector] of the second transistor (13), the control electrodetector transistor (14) and the second terminal of the third resistor (8), the second input (164) is connected to the 1 drawing c