elleny

[Course Design] NE555 Delay Circuit (Monostable)

Overview

Introduction: This course is designed from the perspective of digital electronics experimental course design - NE555 timer and its application

The starting signal is a negative pulse input from pin 2. When no trigger signal is added, pin 3 outputs low power.

Voltage; after the negative pulse is triggered, pin 3 outputs high potential and automatically recovers after time t.

to low potential.

Principle: When the button is pressed,

Capacitor C3 discharges,

At the same time, pin 3 outputs high level. When C3 is discharged until the voltage of pin 7 reaches a certain level,

C3 starts charging, and pin 3 outputs low level . Pin 3 continues to output when the button is not pressed.

low level. The output high level time is related to the values of C3, R4 and R5.

Calculation formula: t = 0.693(R4+R5)*C3

Physical map

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-19 20:20:40

Inline instructions in TI DSP TMS320C66x study notes (c6x.h Chinese annotations) (VI)
[code]/********************************************************************************/ /* C6X.H v7.4.12 */ /********************************************************************************/ #include
Recruiting VC software engineers
[img=210,152]http://pic.baike.soso.com/p/20120704/20120704111013-1365166075.jpg[/img]This position challenges high salary, those who are interested can come to take the challenge [img=60,60]http://www
Investigate which shopping websites our engineers frequently visit?
[font=微软雅黑][size=3]With the gradual popularization and rapid development of e-commerce, nowadays you can buy almost everything from all over the world by just typing a few words at home{:1_103:}[/size
Basic timer PWM output of Huada HC32L136
The basic characteristics of PWM output of general timer 0/1/2 include 2 independent PWM outputs CHA, CHB, 1 complementary PWM output (CHA, CHB) + 1 independent PWM output (gate), 1 complementary PWM
MSP430 series single chip microcomputer interface technology and system design examples
MSP430 series MCU interface technology and system design examples, quick start for novices.
Do you know the commonly used sensors in drones and VR?
[size=3][color=#000000][b]1. UAV Accelerometers Accelerometers are used to determine the position and flight attitude of drones. Like the position of a Nintendo Wii controller or an iPhone screen, the

Datasheet More

Circuits More