SU961106A2

SU961106A2 - Monovibrator

Info

Publication number: SU961106A2
Application number: SU813272137A
Authority: SU
Inventors: Константин Николаевич Казаков; Владимир Александрович Сысоев
Original assignee: Предприятие П/Я В-2003
Priority date: 1981-01-05
Filing date: 1981-01-05
Publication date: 1982-09-23

Description

(5) ОДНОВИБРАТОР(5) SINGLE VIBRATOR

1one

Изобретение относитс к автомати ке и вычислительной технике и ожет быть использовано в разли« ных цифровых устройствах.The invention relates to automation and computer technology and can be used in various digital devices.

По основному авт. ев; № 369985 известен одновибратор, содержащий тригсер с раздельными входами, дифференцирующую цепь, между резистором и конденсатором которой подключен один из входов триггера, второй вход кото- ,Q рого подключен через элемент И-НЕ с двум входами, врем задающую RC-цепь, подключенную к выходу инвертора, вход которого соединен с одним из выходов триггера, при этом второй вход элемен з та И-НЕ соединен через полевой транзистор с общей шиной, а к средней точке врем задающей RC-цепи и затвору полевого транзистора подключен диод, катод которого подключен к шине ис- точника питани U1.According to the main author. ev; No. 369985 is known a one-shot containing a trigger with separate inputs, a differentiating circuit, between which resistor and capacitor one of the trigger inputs is connected, the second input of which is QOGO connected via an IS-NOT element with two inputs, the time setting RC circuit connected to the inverter output, the input of which is connected to one of the trigger outputs, while the second input of the element IS NOT is connected through a field-effect transistor to the common bus, and the diode is connected to the midpoint of the driving RC circuit and the gate of the field-effect transistor ene bus power supply can U1.

Однако такой одновибратор обладает сравнительно большим временем восстановлени и не имеет возможности суммировани зременных интервалов , -т.е.. имеет ограниченные функциональные возможности.However, such a one-shot has a relatively long recovery time and does not have the ability to sum up time slots, i.e., has limited functionality.

Цель изобретени - расширение функциональных возможностей.The purpose of the invention is to expand the functionality.

Цель достигаетс тем, что в одно вибратор дополнительно введен управ л емый ключ, включенный между шиной источника питани и резистором врем задающей RC-цепи.The goal is achieved by additionally inserting a control key into one vibrator, connected between the power supply bus and the resistor of the RC master circuit.

На чертеже представлена структурна схема предлагаемого одновибратора .The drawing shows a structural diagram of the proposed one-shot.

Claims

The proposed one-shot contains a trigger 1 with separate inputs, a differentiating circuit, between resistor 2 and capacitor 3 of which one of the trigger inputs is connected, the second input of which is connected through an IS-HE element with two inputs, the time setting RC circuit consisting of a resistor 5 of a capacitor 6 and connected to the output of the inverter 7, whose input is connected to one of the trigger outputs, while the second input of the NAND element is connected via a field transistor 8 to a common bus and to the average time of the driving RC circuit and the gate of the left transistor A diode 9 is connected whose cathode is connected to the bus of the positive pole of the power supply, control switch 10, which is connected to resistor 5 from one time of the master circuit and the other to the positive bus of the power supply, inputs 11 and 12, outputs 13 and 14, The one-shot works as follows. In the initial state, in the absence of a triggering pulse, the field-effect transistor 8 is closed by a positive potential applied to its gate. The initial state of flip-flop 1 is set in such a way that the output of the 13 holds the level of logies zero; and the output And the level of logical units. A negative pulse entering input 11 triggers trigger 1 and the negative voltage drop that occurs at the output of inverter 7 abruptly changes the gate potential of the transistor and opens it. From this moment, the charge of the capacitor 6 starts through the resistor 5 and the open control key 10. As the capacitor charges, the positive potential at the gate of the transistor 8 starts. When a pulse arrives at input 12, the key 10 closes for a time equal to the duration of the input 64 impulse. The charge on the capacitor 6 stops. In this state, the circuit remains until the end of the pulse at the input 12. After the end of the pulse, the key 10 opens, the charge of the capacitor 6 continues. When the threshold is reached, the transistor closes, trigger 1 overturns, and the circuit returns to its original state. Thus, the proposed one-shot has 80mmon (the increase in the duration of the output pulse by the duration of the input control pulse, i.e., it is possible to sum up the time interval developed by the proposed one-shot, with the duration of the control pulse coming from outside. This is significantly expands its functionality and scope of application. Invention Formula One-Vibrator according to St. St. Number Zb9b86, characterized in that, in order to expand its functionality , It introduced a controllable switch connected between the power supply bus and a resistor RC-time specifying circuit. Sources of information received note in the examination 1. Copyright certificate USSR № 369686, cl. H 03 K, 04/23/71.

Vmd 5 -if