SU1541774A1 - Flip-flop - Google Patents

Abstract

The invention relates to a pulse technique and can be used in automation devices. The aim of the invention is to enhance the functionality by operating in a D-flip-flop mode. The device contains the first, the second relay 1,2 with switching contacts 1.2, 1.3, 2.2, the first, second diodes 6.7, the first, the second resistors 3,4, single, zero, counting inputs 10,11,12, single, zero outputs 15, 16. To achieve the goal, a thyristor 9, a third diode 8, a third resistor 5, a disconnecting contact group 1.4 of the first relay, a closing contact 2.3 of the second relay, a controlling contact group 19 are entered into the device. 4 Il.

Description

cl

Ј

one

1

The invention relates to a pulsed equipment and can be used in discrete automation devices.

The aim of the invention is a plant. rhenium trigger functionality by operating in the D-flip-flop mode.

FIG. 1 shows the basic electrical circuit of the trigger; 10 FIG. / 2 - diagram of operation in the D-flip-flop mode; in fig. 3 - diagram of operation in the IK-trigger mode ;. FIG. 4 is a diagram of operation in the T-flip-flop mode.

The trigger contains the first relay 1 with 15 winding 1.1, the first 1.2, the second I. 3 switching and opening 1.4 contact groups, second relay 2 with winding 2.1., Switching 2.2 and closing 2.3 contact groups, first 20, second 4 and third 5 resistors, first 6, second 7 and third 8 diodes , thyristor 9, single input (1-input) 10, zero input (K-input) 11, counting input (T-input) 12, which serves as 25 also clock input (C-input), information input (D-input) 13, stationary input 14, unit output 15, zero output 16, the first 17 and the second 18 power supply bus, which controls the contact group 30.

The first conclusions of the windings 1.1. and 2.1, respectively, the first 1 and second 2 relays through the first 3 and second 4 resistors are connected to the first bus 1 7 -. power supply, the first output winding 1.1 of the first relay 1 is connected to the disconnecting contact of its first switching contact group 1.2, the closing contact of which is connected Q to the first output of the winding 2.1 of the second relay 2, the second output of the winding 1.1 of the first relay 1 through the first diode 6 in direct connection to the single output 15 of the trigger and to the closing contact of the switching contact group 2.2 of the second relay 2, the disconnecting contact of which is connected to the zero output 16 of the trigger, and the switching contact to the second 50 power bus 18, switching the contact of the first switching contact group 1.2 of the first relay 1 is connected to the counting input 12 of the trigger, which through the second diode 7 in the forward

55

switching on is connected to the second terminal of the winding 1.1 of the first relay 1, and directly to the switching contact of the second switching contact

Q 5 0

five

group I .3 of the first relay 1, the opening contact of which is connected to the single input 10 of the trigger, and the closing contact - to the zero input 11 of the trigger.

The second terminal of the winding 2.1 of the second relay 2 through the thyristor -9 is directly connected to the second terminal of the winding 1.1 of the first relay 1, the control electrode of the thyristor 9 through the third resistor 5 is connected to the information input 13 of the trigger, which through the opening contact group 1.4 of the first relay 1 connected to the setup input 14 of the trigger, connected through a serially connected closing contact group 2.3 of the second relay 2 and the third diode 8 in direct connection to the first terminal of the winding 1.1 of the first relay 1, via the control contact group PU 19 to the zero output of flip-flop 16.

The trigger works as follows.

In the D-flip-flop mode (control contact group 19 is open) in the initial state at the inputs 13, (D - input) and 12 (C-input) and at the single output 15 - zero signals, at the zero output 16 - a single signal , relays 1 and 2 are de-energized, and their contacts are in the appropriate position. The trigger is in the zero state.

If the D-input 13 is a zero signal (Fig.2.a), then when a pulse arrives at the C-input 12 (first pulse, Fig.26), relays 1 and 2 do not work, since the terminals of winding 1.1 of the first relay 1 the same potentials are supplied through diode 7 and contacts 1.2, and the voltage across the leads of the winding 2.1 of the second relay 2 is absent, since the thyristor 9 is closed.

When a single signal appears at the time t, D-input 13 (Fig. 2a), a current flows through the circuit ;, input 13, resistor 5, thyristor control transition 9, winding 2.1, resistor 4, bus 17. Thyristor 9 is prepared for switching on . When a next pulse arrives at time-ta, the duration of which must be no less than the response time of the relay tM4ns tcpaB2, the C-input 12 (second pulse, Fig. 26) turns on the thyristor 9, and the coil 2.1 of the second relay 2 is energized:

five

input 12, diode 7, thyristor 9, winding 2.1, resistor 4, bus 17. The second relay 2 operates (Fig. 2c), switches the contact of its switching contact group 2.2 and closes the contact of the closing contact group 2.3, and after a time tTn contacts) a zero signal appears at the output 16 (Fig. 2d), and after a period of time tcpq62 a single signal at the output 15 (Fig. 2e), i.e. the trigger goes into one state.

The first relay 1 does not work, because the potentials of its winding 1.1 are the same. At the end of the pulse at the C input 12, the trigger remains in one state, the relay 1 also fails, since the windings 1.1 of the windings have the same potentials through diode 6 and the chain from the contacts 2.3 and diode 8, and the winding 2.1 of relay 2 receives power supply on the circuit: bus 18, pins 2.2, diode 6, thyristor 9, winding 2.1 resistor 4, gaine 17. When the next pulse arrives at C input 12 (third pulse, Fig.26) and if there is a single signal at the D- input 13 switching of the relay does not occur, and the trigger is in the single state. A zero signal at D-input 13 (Fig. 2a) removes the positive potential from the first terminal of the winding 1.10 of the first relay 1 and current flows through the circuit: bus 18, contacts 2.2, diode 6, winding 1.1, resistor 3, bus 17. First Relay 1 triggers (Fig. 2e), switches the contacts of its contact groups 1.2 and 1.3 and opens contacts of group 1.4, while switching contacts 1.3 and 1 .4 does not affect the trigger operation, and switching contacts 1.2 will prepare the disconnecting circuit of the second relay 2. When receipt at time t of the next pulse to the C-input 12 (fourth pulse, f g.26) an anode of the thyristor 9 and the first terminal of the second relay winding 2.J 2 It appears at the same potential, coming through the diode 7 and the contacts of the first relay 1 1.2.

Relay 2 is turned off (Fig. 2c), switches the contact of group 2.2 and opens the contacts of group 2.3, with the interval tTf over time. on v417746

A zero signal is output at output 15 (figd), and after a time tgo ,, ,,, (relay 2 return time) - a single signal at output 16 (fig.2g) i.e. the trigger goes to the zero state. Upon termination at time t5 of a pulse at C-input 12, the first relay 1 and the trigger are turned off

JQ is in the initial (zero) state. When the next pulse arrives at the C input of the 12th pulse, Fig. 2b, the trigger remains in the zero state (as with the arrival of the first pulse). After the appearance of a single signal at the time ts at D-input 13 (Fig. 2a), the trigger works in the same way as described.

20 In the IK-flip-flop mode (control contact group 19 is closed) in the initial state at inputs 10 (I-input), And (K-input) and at output 15 - zero signals, at output Y

25 16 and on installation input 14 - 1 unit signals, relays 1 and 2 are de-energized, current flows through the circuit: bus 18, contacts 2.2, output 16, contact group 19, input 14L contacts

30 1.4, the resistor 5 is a thyristor 9 erecting junction, winding 2.1, resistor 4, bus 17. The trigger is in the zero state. Upon receipt at time t (pulse for 1-input

35 10 (first pulse, fig. 3a) or simultaneously 1-input 10 and K-input 11 (shown by a dotted line, fig. 26) turns on the thyristor 9, and winding 2.1 of the second relay 2 is fed

40 of the circuit: input 10, diode 7, thyristor 9, winding 2.1, resistor 4, bus 17. The second relay 2 operates (fig.Zv), switches contacts similar to the D-trigger, and the signals on the outputs

45 15 and 16 are reversed (Fig. 3d, e) also in a manner similar to the D-trigger.

Simultaneously with the change of the signal at the output 16, it changes from one to zero and the signal at input 14. The trigger goes to the state one. At the end of time tz, at the 1-input 10 (Fig. 3a), the positive potential is removed from the first output of the winding 1.1 of the first relay 1, and the winding 2.1 of the relay 2 receives power supply via the circuit: bus 18, contacts 2.2, diode 6, thyristor 9, winding 2.1, resistor 4, bus 17. Receives

power winding 1.1 relay 1 on the circuit: bus 8, contacts 2.2, diode 6, winding 1.1, resistor 3, bus 17. Relay 1 operates (fig.Zh), switches the contacts like a D-flip-flop, and switching contacts 1.2 prepares the circuit disconnecting the second relay 2, switching contacts, 1.3 re-commits T- and K-inputs, and opening contacts 1.4 disables setup input 14. When the next pulse (the next pulse) arrives at 1-input 10 (the second pulse, k Fig. Over) the relay switches does not occur, and the trigger is in a single state.

When a pulse arrives at time tj at K-input 11 (first pulse, Fig. 3b) or simultaneously at K-input 11 and 1-input 10 (shown by dotted lines, Fig. 3), relay 2 is turned off, and the signals on the outputs 1 and 15 and 16 are reversed (FIG. 3 d), similar to the D-flip-flop. The signal at input 14 also changes to unity, but does not flow to resistor 5 and diode 8, since pins 1.4 are open. The trigger goes to the zero state. When the pulse at K-input 11 ends at the moment L, the first relay 1 is turned off, the trigger is in the initial (zero) state. When the next pulse (the following pulses) arrives at the K-input 11 (the second pulse, Fig. 36), the relay does not switch, and the trigger is in the zero state. When the next pulse arrives at the moment t on the I-input 10 (the third pulse, fig.Za), the trigger works in the same way as described.

In the counting T-flip-flop mode (control contact group 19 is closed), in the initial state at the T-input 12 and at the output 15 zero signals, at the output 16 and at the installation input 1 4 single signals, relays 1 and 2 are de-energized, current flows similarly to the IK-trigger. The trigger is in the zero state. When a pulse arrives at T-time 12 (first pulse, Fig. 4a) and at the end of time t, the flip-flop works like an IK trigger when the first pulse arrives at T-input 10, i.e. the trigger goes into one state (figb-e).

C |

five

Upon receipt at time t} of the next pulse to the T-input Ii (second pulse, figa 4a) and after its termination at time t. the trigger works similarly to the TK-trigger when the first pulse arrives at the K-input 11, i.e. the trigger goes to the zero state (figb-e), etc. Pulses are counted. Thus, the extension of functionality consists in the fact that the D-trigger function is added to the existing IK-rpgter and -T-flip-flop functions, and the flip-flop becomes universal and can be used for various purposes.

Claims (1)

Invention Formula tTrigger containing two relays, the first winding terminals of which through the first and second resistors are connected to the first power bus, the first winding terminal of the first relay is connected to the opening contact of its own first switching contact group, the closing contact of which is connected to the first winding terminal of the second relay, the second winding terminal the first relay is connected to the cathode of the first diode, the anode of which is connected to the single output of the trigger and to the closing contact of the switching contact group of the second relay, the opening contact which is connected to the zero output of the trigger, and the switching contact to the second power bus, the switching contact of the first switching contact group of the first relay is connected to the counting input of the trigger, which is connected to the second winding terminal of the first relay through the second diode and directly to a switching contact of the second switching contact group of the first relay, the disconnecting contact of which is connected to the single trigger input, and the closing contact to the zero input of the trigger, characterized in that, for expansion of functionality, a thyristor, a third diode, a third resistor and a control contact group are inserted into it, the first relay is equipped with a disconnecting contact group, and the second relay has a closing contact group, the second winding terminal of the second relay is connected to the thyristor cathode, the anode of which is connected to the second terminal of the winding of the first relay, and the control electrode through the third resistor is connected to the information input of the trigger, which through the opening contact group of the first relay is connected to the 7777 ten In the trigger input, connected via the second relay's closing contact group to the anode of the third diode, the cathode of which is connected to the first winding terminal of the first relay, the trigger input is connected to the zero output of the trigger through the control contact group.  ttpof, tfei, 1 - h Figz B1 about 1 o 1 o 1 o Figm