SU984058A1

SU984058A1 - Pulse frequency divider

Info

Publication number: SU984058A1
Application number: SU792859455A
Authority: SU
Inventors: Владимир Михайлович Козловский
Original assignee: за витель «ерюда,.., |.: «-;л В.М. Козловский ,„ Ij/ .,
Priority date: 1979-12-25
Filing date: 1979-12-25
Publication date: 1982-12-23

Description

(5) ДЕЛИТЕЛЬ ЧАСТОТЫ ИМПУЛЬСОВ(5) PULSE FREQUENCY DIVIDER

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Изобретение относитс к вычислительной технике и может быть использовано в цифровых устройствах автоматики .The invention relates to computing and can be used in digital automation devices.

Известен делитель частоты, содержащий мультивибратор, интегратор, клюочи и пороговое устройство ij. Known frequency divider containing multivibrator, integrator, keys and threshold device ij.

Недостатками этого технического решени вл ютс сложность в. регулировке коэффициента делени и низка временна стабильность.The disadvantages of this technical solution are the complexity of c. adjustment of the division ratio and low temporal stability.

Наиболее близким по технической сущности к изобретению вл етс делитель частоты, содержащий ждущий мультивибратор , компаратор, триггер, интегратор , логический блок, ключи и резисторы 2 .The closest in technical essence to the invention is a frequency divider comprising a standby multivibrator, a comparator, a trigger, an integrator, a logic unit, keys and resistors 2.

Недостатками известного техничес- . кого решени вл ютс сложность процесса регулировки коэффициента делени , низкое быстродействие и низкие функциональные возможности.The disadvantages of the known technical. Who decides is the complexity of the process of adjusting the division factor, low speed and low functionality.

Цель изобретени - упрощение процесса регулировки коэ({)фициента делени , повышение быстродействи и расширение функциональных возможностей делител частоты импульсов.The purpose of the invention is to simplify the process of adjusting the ratio ({) of the fission factor, increasing the speed and extending the functionality of the pulse frequency divider.

Поставленна цель достигаетс тем, что в делитель частоты импульсов, содержащий компаратор, первый вход ко . торого подключен к выходу интегратора , а второй соединен с источником опорного напр жени , выход компаратора подключен к первому входу первогоThe goal is achieved by the fact that in the pulse frequency divider containing the comparator, the first input to. connected to the integrator output, and the second is connected to the voltage source, the comparator output is connected to the first input of the first

10 элемента И, ждущий мультивибратор, вход которого соединен с входной шиной , триггер и второй элемент И, дополнительно введены элемент НЕ и два формировател , причем вход ждущего10 And elements waiting for a multivibrator, whose input is connected to the input bus, a trigger and a second element And, an additional element is NOT and two shapers, and the input is waiting

5 мультивибратора соединен с первым входом второго элемента И и через эле-, мент НЕ с вторым входом первого элемента И, выход которого через первый формирователь подключен к единичному 5 of the multivibrator is connected to the first input of the second element I and through the element NOT with the second input of the first element I, the output of which through the first driver is connected to the unit

Claims

20 to the trigger input, the unit output of which is connected to the second input of the second element I, the output of which through the second driver is connected to the left input of the trigger and. To the input Reset the integrator, and the output of the standby multivibrator is connected to the input of the integrator. The drawing shows a functional diagram of the pulse frequency divider. The pulse frequency divider contains the standby multivibrator 1, integrator 2, comparator 3, reference source 4, And 5 and 6 elements, element NOT 7, drivers 8 and 9., trigger 10, input bus 11, output bus 12. The pulse frequency divider works as follows. The input of the waiting multivibrator 1 receives a sequence of rectangular pulses to be divided, from the leading front of which at the output of the waiting multivibrator 1 forms-i, pulses unified in amplitude and duration are input to the input of the integrator 2. At the output of the integrator 2, a voltage is generated, proportional to the number of input pulses, and is applied to the first input of the comparator 3, to the second input of which a voltage is applied from an adjustable source k of the reference voltage, At the moment of coincidence of the voltage at the inputs of the comparator 3, the latter at its output forms the level of the logical unit, preparing the element AND 5 for actuation. The voltage value of the source k of the reference voltage is selected depending on the required division factor. After the end of each input pulse, in particular after (p-1) pulse, where n is the division factor, the output potential of the element NOT 7 enters the input element And 5 and then the output unit And 5 sets the level of the logical unit, the front the front of which, using the imaging unit 8, generates a short pulse that sets the trigger 10 into a single state. As a result, the nth input pulse passes through the element 6 to the output bus 12 without change. In this case, the leading edge of the output pulse using the shaper 9 generates a signal. which resets integrator 2 and trigger 10. Next, the division process is repeated. Thus, the invention allows the frequency division of the input pulse sequence to produce at the output pulses of equal duration to the input. The division factor of the pulse frequency divider can vary over a wide range by changing the magnitude of the voltage of the source k of the reference voltage. In this case, the delay of the output pulse relative to the input is equal only to the response time of the AND 6 element. Invention The pulse frequency divider containing a comparator, the first input of which is connected to the integrator output, and the second is connected to the reference voltage source, the comparator output is connected to the first input of the first Element I waiting for a multivibrator whose input is connected to the input bus, a trigger and a second element AND, which also, in order to simplify the process of adjusting the division factor, would increase Strodeystviya and expansion of functionality, it additionally introduced the element NOT and two drivers, and the input of the waiting multivibrator is connected to the first input of the second element AND And the element NOT to the second input of the first element And, the output of which through the first driver is connected to the single input of the trigger, a single output which is connected to the second input of the second element I, whose output through the second driver is connected to the zero input of the trigger and to the Reset input of the integrator, and the output of the waiting multivibrator with single with the integrator input. Sources of information taken into account in the examination 1. USSR author's certificate number, cl. H 03 K 25/06, 1972.

2. USSR Author's Certificate No. 4Q2158, c. H 03 K 29/00, 1971. (prototype). ef