SU911686A2

SU911686A2 - Pulse generator

Info

Publication number: SU911686A2
Application number: SU802897340A
Authority: SU
Inventors: Юрий Николаевич Худорожков
Original assignee: Калининградское производственное объединение "Стрела"
Priority date: 1980-03-25
Filing date: 1980-03-25
Publication date: 1982-03-07

Description

(54) ГЕНЕРАТОР ИМПУЛЬСОВ(54) PULSE GENERATOR

Изобретение дтноситс к импульсной технике и может быть использовано/ например, при формировании пилообразных и коротких импульсов одной частоты следовани .The invention is applicable to the pulse technique and can be used / for example, in the formation of sawtooth and short pulses of the same tracking frequency.

По основному авт.св. 752760 известен генератор импульсов, содержаний ИСТОКОВЫЙ1. повторитель на полевом транзистрр с врем задающей КС-цепью, включенной параллельно первой нагрузке, в цепи истока, а выходом подключенной к управл ющему электроду транзистора, пороговый элемент, например, нагрузку-динистор , подключенный катодо431 через вторую нагрузку .к отрицательной шине питани , диод, одним выводом подключенный ко входу порогового элемента , а вторьм - к управл ющему электроду транзистора, резистор одним выводом подключенный ко входу порогового элемента 1,According to the main auth. 752760 the generator of impulses, contents is ORIGINAL1 is known. a repeater with a field-effect transistor with a master circuit connected in parallel with the first load in the source circuit, and a output connected to the control electrode of the transistor, a threshold element, such as a dynistor load, connected via a second load to the negative power bus, diode , one output connected to the input of the threshold element, and the second to the control electrode of the transistor, a resistor connected to the input of threshold element 1 by one output,

Недостатком устройства вл етс ограниченность нагрузочной способности .The disadvantage of the device is the limited load capacity.

Цель изобретени - увеличение нагрузочной способности устройства.The purpose of the invention is to increase the load capacity of the device.

Поставленна цель достигаетс тем, что в.генератор импульсов, содержаи1ий истоковый повторитель наThe goal is achieved by the fact that a pulse generator containing a source follower on

полевом транзисторе с врем задающей RC-цепью, включенной параллельно i первой нагрузке в цепи истока, а выходом подключенной к управл ющему электроду транзистора, пороговый элемент, например, динистор, подключенный катодом через вторую нагрузку к отрицательной шине пита НИН, диод, одним выводом подключен10 ный ко входу порогового элемента, а вторым к управл ющему электроду транзистора , второй резистор, одним выводом подключенный ко входу пороге-, вого элемента, введен дополнитель15 ный конденсатор, включенный между опором динистора и общей шиной устройства , а второй вывод резистора подключен к стоку полевого транзистора .a field-effect transistor with the time setting the RC circuit connected in parallel to the first load in the source circuit, and the output connected to the control electrode of the transistor, a threshold element, for example, a dynistor connected by a cathode through a second load to the negative NIN bus, diode, one output connected 10 the second resistor, one output connected to the input of the threshold element, is added an additional capacitor connected between the dynistor support and the second resistor to the input of the threshold element, and the second to the control electrode of the transistor. bus device, and the second output of the resistor is connected to the drain of the field-effect transistor.

2020

На чертеже приведена принципиальна электрическа схема устройства.The drawing shows a circuit diagram of the device.

Устройство содержит полевой транзистор 1, врем задающую RC-цепь на резисторе 2, конденсаторе 3, первую The device contains a field-effect transistor 1, the time specifying the RC circuit on the resistor 2, the capacitor 3, the first

25 нагрузку 4, динистор. 5, вторую нагрузку 6, диод 7, резистор 8, дополнительный конденсатор 9, переменный резистор 10.25 load 4, dynistor. 5, the second load 6, a diode 7, a resistor 8, an additional capacitor 9, a variable resistor 10.

Claims

The device operates as follows oaz30. When the supply voltage is applied according to the polarity indicated in the drawing, a linearly increasing voltage begins to form on the load 4 by means of a charge of the capacitor 3 through the SHCtop 2 re switch to the cut-off voltage of the transistor. The capacitor 9 is also charged through the resistor 8, but it is charged faster than the capacitor 3, and the diode 7 is under voltage of reverse polarity, i.e. the capacitor 3 and the capacitor 9 each are charged through their own charge circuit. When the capacitor 9 voltage is equal to the breakdown voltage of the threshold element 5, it breaks through and discharges the capacitor and 3 and 9. After the discharge of the capacitors, the horny element is turned on, and the process of charging the capacitors begins again. Since the voltage on the capacitor 9 is determined in the inclusion of the threshold element, the amplitude of the output voltage is determined by the voltage on the capacitor 3, i.e. the oscillation frequency is determined by the RC circuit of the capacitor 9, resistor 9g and the amplitude of the output voltage of capacitor 3 and resistor 4. Since capacitor 9 is always charged faster than capacitor 3, the output voltage is below the threshold level of the threshold element. Resistor 4 and 10 regulate the amplitude of the output voltage across the load 2. The greater the resistance of the resistor 2, the smaller the amplitude. transistor current 1. The output voltage amplitude adjustment is made without increasing the generator output resistance on the load

2. In addition, there is a separate adjustment of the steepness of the growth of the pulses and their frequency. Claims of the invention Pulse generator according to auth. 752760, characterized in that, in order to increase its load capacity, an additional capacitor is connected to it, connected between the dynistor support and the common bus of the device, and the second terminal of the resistor is connected to the drain of the field-effect transistor. Sources of information accepted. Attention during the examination 1. USSR author's certificate 752760 ,. cl. H 03 K 3/335, 07.28.79.