SU813731A1

SU813731A1 - Pulse shaper

Info

Publication number: SU813731A1
Application number: SU792779527A
Authority: SU
Inventors: Николай Семенович Листаров; Ипполит Петрович Тищенко
Original assignee: Предприятие П/Я Г-4812
Priority date: 1979-06-13
Filing date: 1979-06-13
Publication date: 1981-03-15

Description

(54) ФОРМИРОВАТЕЛЬ ИАШУЛЬСОВ(54) FORMER OF IASHULS

1one

Изобретение относитс к радиотехнике и может быть использовано в устройствах формировани временных интервалов.The invention relates to radio engineering and can be used in devices for forming time intervals.

Известен формирователь импульсов, содержащий два триггера и линию задержки с отводом, выход которой подключен к нулевому входу второго триггера, единичный вход которого подключен к выходу -первого триггера, вход линии задержки соединен с единичным входом второго триггера, а отвод линии задержки подключен к нулевому входу первого триггера 1.Known pulse shaper, containing two flip-flops and a delay line with a tap, the output of which is connected to the zero input of the second flip-flop, a single input of which is connected to the output of the first flip-flop, an input of the delay line connected to the single input of the second trigger, and a tap of the delay line connected to the zero input first trigger 1.

Недостаток устройства - узкий диапазон длительностей входных сигналов.The disadvantage of the device is a narrow range of durations of input signals.

Наиболее близким техническим решением к предлагаемому вл етс формирователь импульсов, содержащий триггер, элемент И и линию задержки с отводом, вход которой соединен с выходной шиной устройства 2.The closest technical solution to the present invention is a pulse shaper comprising a trigger, an And element and a delay line with a tap, the input of which is connected to the output bus of the device 2.

Недостатком устройства вл етс малый диапазон длительностей формируемых импульсов .The disadvantage of the device is a small range of durations of the generated pulses.

Целью изобретени вл етс расширение диапазона работы устройства.The aim of the invention is to expand the range of operation of the device.

Поставленна цель достигаетс тем, что в формирователь импульсов, содержащийThe goal is achieved by the fact that the pulse shaper containing

триггер, элемент И и линию задержки с отводом , вход которой соединен с выходной шиной устройства, введены элементы ИЛИ- -НЕ, выход первого из которых подключен ко входу линии задержки и первому входу триггера, первый вход - к выходу второго элемента ИЛИ-НЕ и второму входу триггера , второй вход - к выходу триггера, третий вход - к выходу элемента И, входы которого подключены соответственно к отводу и выходу линии задержки, причем первый вход второго элемента ИЛИ-НЕ подключен к выходу, а второй вход - ко входу устройства.Trigger, Element And, and a delay line with a tap, whose input is connected to the device's output bus, elements OR- - NO are inputted, the output of the first of which is connected to the input of the delay line and the first input of the trigger, the first input - to the output of the second element OR-NOT and the second trigger input, the second input to the trigger output, the third input to the output of the AND element, whose inputs are connected respectively to the tap and the output of the delay line, the first input of the second OR element is NOT connected to the output, and the second input to the device input.

На чертеже приведена структурна электрическа схема устройства.The drawing shows a structural electrical circuit of the device.

Устройство содержит элементы ИЛИ- -НЕ 1 и 2, линию 3 задержки, триггер 4, элемент 5 И.The device contains the elements OR- - NOT 1 and 2, the delay line 3, the trigger 4, the element 5 I.

Устройство работает следующим образом.The device works as follows.

Claims

In the absence of an input signal, the former is in the initial state. The first input of the element OR NOT 1, the second and third inputs of the element OR NOT 2 receive voltage levels that allow the input signal to pass through the elements OR-NOT 1 and 2 to the input of the delay line 3, the voltage level from the output of the element OR NOT 1 holds trigger 4 in the zero state. An input signal of any duration is fed to the input bus of the device and, through the OR elements - - NOT 1 and 2, to the input of the delay line 3 and to the first input of the OR-NOT 1 element, thereby supporting the output signal of the OR-NOT 1 signal for a time while the output pulse is being formed. At the same time, the setup signal is removed from the second input of the trigger 4, which is still in the zero state. After a time equal to the delay time of line 3 of the delay, a signal appears at the output of AND 5, which arrives at the third input of the OR-NOT 2 element and prevents the input signal from passing through the OR-NOT element 2. A pulse of a given duration is generated on the output bus of the device . On the pulse decay, the trigger 4 switches over the first input to the unit state, providing signal.from the output an additional blocking of the input signal on the second input of the OR-NOT element 2. After the output pulse expires, after a time equal to the delay time of the delay line 3 to the tap, the prohibition on the third input of the element OR NOT 2. In the case when the duration of the input signal exceeds the duration of the generated pulse, the setting of the trigger 4 to the initial state occurs after the end of the input signal sigia. and the element OR NOT 1. This same signal blocks the input on the first input of the element OR NOT 2, and earlier than the lock on the second input is released. If the duration of the input signal is shorter than the duration of the output pulse, then the trigger 4 is reset immediately after the end of the output pulse. The recovery time of the former is determined by the delay time of the delay line 3 to retraction. For the shaper to work reliably, this time must be longer than the switching time of trigger 4 at the counting input. Claims A pulse shaper comprising a trigger, an And element and a delay line with a tap, the input of which is connected to the output bus of the device, characterized in that. in order to expand the range of work, the elements OR-NOT are introduced into it. the output of the first of which is connected to the input of the delay line and the first input of the trigger, the first input to the output of the second element OR-NOT and the second input of the trigger, the second input to the output of the trigger, the third input to the output of the And element whose inputs are connected respectively to the outlet and the output of the delay line, and the first input of the second element OR is NOT connected to the output, and the second input - to the input of the device. Sources of information taken into account in the examination 1. The author's certificate of the USSR .NO 429518, cl. H 03 K 5/04. 10/23/72.

2. Author's certificate of the USSR X9 580631, cl. H 03 K 5/04, 07/05/76.