SU1095362A2 - Relay flip-flop - Google Patents

Abstract

RELAY TRIGGER, by author. St. No. 718897, characterized in that, in order to expand the scope by eliminating the dependence on the input pulse duration and reducing power consumption, the first and second diodes, the second and third parallel RC circuits, the second terminals of the first and second windings of the remote switch are inserted through the first and the second diodes, respectively, are connected to the first terminals of the output elements of their optoelectronic switches and, through the second and third parallel RC circuits, to the additional closing and additional azmykayuschemu remote switch contacts, an additional switching contact of which is connected to the second power bus. S

Description

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About ke i The invention relates to a pulse technique and can be used in systems of remote and automatic control of technological units and processes. According to the main author. St. 718897 known relay trigger containing a remote switch that controls the contact group, resistors, the first parallel RC circuit and two optoelectronic switches, the first terminals of the input elements in which are connected to the first terminals of the resistors, the second terminals of the resistors are connected to the opening and closing / contacts of the remote switch, the switching contact of the HE through the first parallel RC circuit is connected to the switching contact of the control contact group, the closing contact of which is connected to The power supply busbar and the first terminals of the windings of the remote switch, the second terminals of the input elements and the first terminals of the output elements of the optoelectronic switches are connected to the second power bus tl. A disadvantage of the known devices is the limited application area, since the trigger can normally work only with pulsed input signals and does not allow operation with potential signals, since the time spent on the current of the windings of the remote switches is limited to avoid overheating of the windings, as well as consumption. energy during the entire duration of the input pulse. The purpose of the invention is to expand the scope of application by eliminating the dependence on the duration of the input pulse and reducing energy consumption. The goal is achieved by introducing the first and second diodes into the relay trigger, the second and third parallel RC circuits, the second terminals of the first and second windings of the remote switch are connected via the first and second diodes to the first terminals of the output elements: 1 {. optoelectronic switches and, via the second and third parallel RC circuits, respectively, to the additional closing and additional breaking stages of the remote switch, the additional switching contact of which is connected to the second power supply bus. The drawing shows a schematic diagram of the relay trigger. The relay trigger contains a control contact group 1 with switching and closing contacts and, the first parallel RC circuit 2, resistors 3 and 4, a remote switch 5 with a normally open contact, a closing contact and a switching contact, an additional contact, an additional normally closed contact and an additional switching contact , second and third parallel RC circuits 6 and 7, optoelectronic switches 8 and 9, the first power supply strip 10, the second power supply terminal 11, the first diode 12, the second diode 13. In the relay trigger containing dist the switch 5, the control contact group 1, the resistors 3 and 4, the first parallel RC circuit 2 and the optoelectronic switches 8 and 9, the first terminals of the input elements of which are connected to the first terminals of the resistors 3 and 4, the second outputs of which are connected respectively to the break contact and the closing contact of the remote switch 5, the switching contact of which through the first parallel RC circuit 2 is connected to the switching contact of the control contact group 1, the closing contact of which is connected to the first bus 10 and to the first terminals of the windings of the remote switch 5, the second terminals of the input elements and the first terminals of the output elements of the optoelectronic switches 8 and 9 are connected to the second power bus 11, the first and second diodes 12 and 13, the second and third parallel RC circuits 6 and 7, the second terminals of the first and second windings of the remote switch 5 through the first and second diodes 12 and 13, respectively, are connected to the first terminals of the output elements of their optoelectronic switches 8 and 9 and through the second and third parallel RC circuits 6 and 7, respectively olnitelnomu closes and opens the contacts further and remote switch 5, an additional switching contact of which is connected to the second power bus 11. The trigger works as follows. When the contacts 1 1 .and the control contact group 1 are closed, an impulse current is generated in the circuit of the input element of the optoelectronic switch 8 through the capacitor RC circuit 2 and the resistor 3, which transfers the switch 8 to the open state. This leads to an abrupt increase in the current through the first (left in the drawing) winding of the remote switch 5. The contacts and switch 5 are closed with contacts and respectively. In this case, the circuit of the input element of the optoelectronic switch 8 is broken, and the circuit of the input element of the optoelectronic switch 9 is prepared to receive the next input pulse. At the time of contact closure and the discharged capacitor RC-c pi 6 shunts the output element of the optoelectronic switch 8. Due to a sharp drop in the voltage on the anode of the output element, the optoelectronic switch 8 closes. The capacitor of the RO circuit 6 is charged along the circuit: bus 10 (+ power supply) - closed contacts and - the first winding of the remote switch 5 - RC circuit capacitor 6 - contacts and - bus 11 (- power supply). Upon completion of the capacitor charge and when the contacts and control contact group 1 remain closed, a single winding of the remote switch 5 carries the current determined by the resistance value of the winding and the resistor of the RC circuit 6. 624 The RC circuit parameters are selected based on There are two main requirements: to provide a reliable extinguishing pulse of the optoelectronic switch and a satisfactory speed of the relay trigger. The switch-off speed of the optoelectronic switch, which is several orders of magnitude faster than the turn-on and turn-off speeds of the contact elements, makes it possible to select for most applications small capacitors and high-resistance RC circuit resistors. At the same time, the current flowing through the winding of the remote converter 5 and the resistance of the RC circuit 6 and 7 is negligible compared to the current required to switch the remote switch. 5. The trigger state determined by the closed state of the contacts, and, is saved before the arrival of the next input pulse. When the contacts and control contact group 1 are re-closed, the processes proceed in the same way, but the optoelectronic switch 9 is turned on, the second switch (the right, in the drawing) winds the remote switch 5, the resistor 4 and the RC-circuit 7. Each time the control contact closes current contact group 1 through the winding of the switch and the capacitor of the RC circuit of that trigger arm, which previously was in 3 unit states, a current pulse flows. However, due to the above comments about the parameters of the RC circuit, the pulse is negligible compared to the time needed to switch the remote switch. The technical and economic effect is provided by expanding the scope of the trigger and reducing its energy consumption.

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Claims (1)

RELAY TRIGGER, by author St. No. 718897, characterized in that, in order to expand the scope by eliminating the dependence on the input pulse duration and reducing power consumption, the first and second diodes, the second and third parallel RC circuits, the second terminals of the first and second windings of the remote switch through the first and the second diodes are respectively connected to the first terminals of the output elements of their optoelectronic keys and through the second and third parallel RC circuits, respectively, to an additional closing and additional disconnect yuschemu remote switch contacts, an additional switching contact of which is connected to the second power supply bus. ω CZ о с СЛ GO <33 N3>