SU832727A1 - T flip-flop with non-volatile information - Google Patents

Description

The invention relates to a pulse technique and can be used in various devices of discrete automation. Known trigger on a double-winding relay as part of a pulse counter containing thyristors and diodes P1. The disadvantage of a trigger is its complexity. A trigger is also known that contains a two-winding relay, a thyristor, resistors, and a capacitor 2. However, its reliability is insufficient. The purpose of the invention is to increase the reliability of work. The goal is achieved by the fact that, in a counting trigger containing a two-winding relay, a thyristor with a control. The electrode is connected through a capacitor to the trigger input, the anode of the thyristor is connected to the first power supply, the cathode through the switch and disconnects the contacts to the beginning of the first winding a two-winding relay, between the beginning of the first winding and the end of the second, a newly introduced capacitor is connected, the end of the second winding is through the first newly entered diode, the diode is connected to the closing contact and the trigger output, the beginning of the second end of the first coil connected to the second power supply bus, between which and the control electrode of the second thyristor is turned on again introduced into the diode polarity reverse to the input voltage. The drawing shows a schematic diagram of a trigger. The trigger contains a two-winding relay 1, a thyristor 2, the control electrode is connected through capacitor 3 to the input 4 of the trigger, the anode of the thyristor 2 is connected to the power bus 5, the cathode through the switching and opening contacts is connected to the beginning of the first winding of the two-winding relay 1, between the beginning of the first winding and the end of the second winding connects the newly introduced capacitor 6, the end of the second winding through the newly introduced diode 7 is connected to the closing contact and the output 8 of the trigger, the beginning of the second and the end of the first winding are connected to the power supply bus 9 , between which and the control; the thyristor 2 electrode is connected to the newly introduced diode 10 in polarity, opposite to the input voltage. The diode 10 reduces the discharge time of the sensor 3 in the pause by pulses, the diode 7 decreases the pulses.

The device works as follows,. , ,

When you turn on the power, the thyristor 2 is closed and all circuit elements are de-energized,. The first counting positive pulse is fed to the input 4 of the trigger and through the capacitor 3 to the control electrode of the thyristor 2 and opens it. A voltage of the source is applied to the first winding of the two-winding relay 1 and capacitor 6. The magnitude of capacitor 6 is chosen such that during the relay operation time (more precisely, during the break contact switching time), capacitor 6 is charged through the second winding of two-winding relay 1 to dual voltage.

When a two-winding relay operates, its switching contact is thrown during the flight, its thyristor 2 closes. The first winding of the winding relay 1 is under voltage due to the energy of the capacitor 6, which is discharged through it and the second winding of the two-winding relay 1. After the first positive counting pulse has expired, the thyristor start capacitor 3 is discharged through the pulse source and diode 10

the counting pulse opens the thyristor 2 trigger and through diode 5 enters the second winding of relay 1,

Relay 1 is triggered, and during the flight of the switching contact the thyristor 2 closes. The second winding of relay 1 receives energy due to the discharge of the cowdensor 6 through the first and two) winding of relay 1, thus the trigger returns to its original state.

The current from the power source is consumed only for the duration of the relay 1.

Claims (2)

Invention Formula A counting trigger with non-destructive information containing a two-winding relay, a thyristor, the control electrode of which is connected through a capacitor to the trigger input, characterized in that, in order to increase reliability, the thyristor anode is connected to the first power supply bus, the cathode through switching and jogging contacts are connected jc the beginning of the first winding of the double-winding relay, between the beginning of the first winding and the end of the second, a newly introduced capacitor is connected, the end of the second winding is connected to a short through the first newly entered diode yuschemu terminal and the output latch, the second and the beginning end of the first coil connected to the second power supply bus, between which and the control electrode of the second thyristor is turned on again introduced into the diode polarity reverse to the input voltage. Sources of information taken into account in the examination I about the Author's certificate of the USSR, № 452074, cl. H 03 K 23/03, 04/4/73. 2. Radio 1977, No. 10, p.52.