SU1200414A1 - Relay flip-flop - Google Patents

Abstract

RELAY TRIGGER containing a self-holding two-winding relay, two single-winding relays, a diode, a resistor and a polled contact device group of the control device, the first terminals of the windings of the two-winding relay with self-holding are connected to the first power supply bus, the second terminals of the first and second windings are connected to 1 " (switching) contacts of the first closing groups of the first and second single-winding relays, respectively, and to the first and second output buses, which opens the switching contact) of the opening contacts group of two-winding The relay with self-holding is connected to the first terminal of the winding of the first single-winding relay, the switch (switching) contact of the closing group of contacts of the two-winding relay with self-holding is connected to the first terminal of the winding of the second single-winding relay, switch (disconnecting) the contact of the opening group of contacts of the double-winding relay with self holding. to the closing (switching) contact of the contact group of the control device and through the diode in the opposite direction to the first output resist Ora, characterized in that, in order to increase reliability and enhance functionality, a bipolar transistor, an additional diode, a clock bus and additional closing groups of contacts of the first and second single-winding relays are inserted into it, the base of the bipolar transistor is connected to the first resistor pin , spol torus collector - to the switching closing contact) of the closing contact group of the two-winding relay with self-holding, the emitter - through an additional diode in the forward direction to the second bus power supply, to which the switchings (closing) contact of the limited contact group of the control device are connected, the switching (closing) contacts of the first closing contact groups of the first and second single-winding relays, as well as the switching (closing) contacts of the additional closing groups of the first and second single-winding relays, and closing (switching) contacts - to the first terminals of the windings of the first and second single-winding. relays, respectively, the second terminals of the windings of which are connected to the clock pulse bus and to the second terminal of the resistor.

Description

1 The invention relates to a pulse technique and can be used in automatic monitoring and control devices where information on the state of contacts is required only at the moment of their interrogation. The aim of the invention is to increase reliability by increasing the service life of contacts in the case of using slow-opening control contacts, as well as enhancing the functionality by enabling the device to start up on output buses. The drawing shows a schematic diagram of the device. The device contains a two-winding relay 1 with self-holding, with opening and closing contact groups 1.1 and 1.2, single-winding relays 2 and 3 with closing contact groups 2.1, 2.2 and 3.1, 3.2, respectively, diode 4 and additional diode 5, transistor 6, the resistor 7, the control device 8 with the contact group 8.1, the first and second tires 9 and 10 of the power supply, the clock bus 11, output buses 12 and 13. According to the drawing, a relay trigger containing a two-winding relay 1 with self-holding, two single-winding relays 2 and 3, diode 4, resistor 7 and interrogator vaemuyu group 8,1 contacts of the control device S, the first terminals of the windings of the two-winding relay 1 with self-holding are connected to the first bus 9 of the power supply, the second terminals of the first and second windings to the closing (break) contacts of the first closing groups.2.1 and 3.1 of the first and second single-winding relays 2 and 3, respectively, and to the first and second output buses 12 and 13 the disconnecting (switching) contact of the disconnecting group 1.1 of the contacts of the two-winding relay 1 with self-holding is connected to the first terminal of the windings of the first single-winding relay 2, closing switching contact of the closing group 1.2 of the contact of the two-winding relay 1 with self-holding is connected to the first terminal of the winding of the second single-winding relay, switching disconnecting); contact of disconnecting group 1.1 of contacts of a two-winding relay 1 with self-holding is connected to the closing ((switching) contact of the polled group of 8.1 contacts of the control device 42 and through diode 4 in the opposite direction to the first output of resistor 7, a bipolar transistor 6 is inserted, an additional diode 5, the input bus 11 clocking pulses and, additional closing groups of contacts 2.2 and 3.2 of the first and second Single-winding relays 2 and 3, the base of the bipolar transistors is connected to the first output of the resistor 7, the collector to the switch to the contact (closing) contact of the closing group 1.2 of the contact of a two-winding relay with self-holding, the emitter through the additional diode 5 in the Direct direction is connected to the second power bus 10, to which the switching (closing) contact of the polled device is connected. 8.1 contacts of the controlling device, switching (closing) contacts of the first closing groups 2.1 and 3.1 of the contacts of the first and second single-winding relays 2 and 3, as well as the switching (closing) contacts of the additional closing groups 2.2 and 3.2 of the first and second mono otochnyh relays 2 and 3, and their zamykakschie (switching) contact - to the first terminals of the first and second windings odnoobmotochnyh relays 2 and 3 respectively, the second terminals of which are connected windings schine to the timing pulses 11 and to the second terminal of the resistor. The device works as follows. In the initial state, when the signal of the control device 8 is absent and its interrogated contacts of group 8.1 are open, the device does not respond to interrogation pulses arriving at the input Shchina I. The device is reset to the initial state by applying a pulse to the output bus 13. The output tire 12 may be used to set to another steady state. When the signal of the control device 8 is present, the polled contacts of its 8.1 group are closed, therefore, when a polling pulse arrives at the input bus 11, the voltage from the power bus 1.0 through the closed contacts of group 8.1 of the control device 8 and the closed contacts of group 1.I of the two-winding relay 1 goes to winding single-winding relay 2, Single-winding relay 2 operates 3 and. its group of 2.2 contacts becomes self-holding until the end of the interrogation pulse, and its group of contacts 2.1 applies voltage to the turn-on winding of the two-winding relay 1, which causes it to trip, resulting in the contacts of its group 1.1 opening and the contacts of group 1.2 closing. In addition, the voltage from the power supply bus 10 through the closed interrogated contacts of group 8.1 of the control device 8 and the diode 5 enters the base of the transistor 6 and locks it. A diode 4 connected in the conducting direction forms an auto-emitter circuit of the bipolar transistor 6, which it provides reliable locking and eliminates the triggering of a single-winding relay 3 when the contacts of group 1.2 of a double-winding relay 1 are closed. s 2.1 and 2.2 come into initial state. The contacts of group 1.1 of a two-winding relay 1 remain open, and contacts 1.2 remain closed. The device does not react to the next polling pulses until the polled contacts of group 8.1 of the control device 8 are open. When the polled contacts of group 8,1 of the control device 8 are open, the locking effect on the bipolar transistor 6 is transformed through the bottom 5, therefore when the arrival of the interrogation pulse on the input bus 11, the transistor 6 is unlocked by the base current, the value of which is determined by the resistor 7. As a result, the voltage with the cross co. The diodes are fed through diode 4, an open bipolar transistor 6 and closed contacts of group 1.2 of a two-coil relay 1 to the winding of a single accurate relay 3. .. Single winding relay 3 and, with its group of 3.1 contacts, applies a voltage to the disconnecting winding of a two-winding relay 1, which causes its operation, as a result of which the contacts of its group 1..1 close and the contacts of group 1.2 open, i.e. take the initial state. At the end of the polling pulse, the single-winding relay 3 releases and the contacts of its 3.1 and 3.2 groups also return to their original state. The device does not react to the next polling pulses until the polled contacts of group 8.1 of the control device 8 are closed. Subsequently, the cycle of operation of the device for polling the contacts is repeated. The output signals are formed on the output buses 12 and 13. The use of transistor 6 and diode 5 in the device provides a key operating mode for the single-winding relay 3, since with closed polled contacts of group 8.1 of the control device 8, the base of transistor 6 is connected diode 4 with bus 10 power supply, it is locked, which excludes the operation of a single-winding relay 3 until the polled contacts open 8.1, while diode 5 excludes the influence of diode 4, i.e. provides an additional offset of the potential of the emitter of the transistor 6 and, therefore, reliable locking. Using the power supply device in the proposed device 9 enables it to be installed in one of two stable states by applying pulses to the output buses 12 and 13, regardless of the state of the polled contacts of group 8,1 of the control device 8.

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Claims (1)

RELAY TRIGGER containing a two-winding relay with self-holding, two single-winding relays, a diode, a resistor and an interrogated group of control device contacts, the first conclusions of the windings of a two-winding relay with self-holding are connected to the first power bus, the second conclusions of the first and second windings are connected to the closing (switching ) the contacts of the first closing groups of the first and second single-winding relays, respectively, to the first and second output buses, the opening (switching) contact of the opening group of contacts of the double-winding relay self-holding connected to the first terminal of the winding of the first single-winding relay, the making (switching) contact of the closing group of contacts of the dual-winding relay with self-holding connected to the first output of the winding of the second single-winding relay, the switching (opening) contact of the opening group of contacts of the double-winding relay with self-holding connected to the closing (switching) contact of the interrogated group of contacts of the control device and through the diode in the opposite direction to the first output of the resistor, in order to increase reliability and expand functionality, a bipolar transistor, an additional diode, a clock pulse bus and additional closing contact groups of the first and second single-winding relays are introduced into it, the base of the bipolar transistor is connected to the first output of the resistor, and the collector to the switching ( to the closing) contact of the closing group of contacts of the two-winding relay with self-holding, the emitter - through the additional diode in the forward direction to the second power bus, to which The switching (closing) contact of the limited group of contacts of the control device, the switching (closing) contacts of the first closing groups of contacts of the first and second single-winding relays, as well as the switching (closing) contacts of the additional closing groups of the first and second one-winding relays, and their closing contacts are to the first (switching) terminals of the windings of the first and second single-winding relays, respectively, the second terminals of the windings of which are connected to the bus of the clock pulses and to the second terminal of the rubber side.