Category: 555 Timer Projects

High Low Voltage Cutout Circuit

Engineeering Projects
high low voltage cutout circuit

The protection of electrical and electronic appliances is the main concern these days. Some electronics appliance is very sensitive to voltage i.e. it only functions when adequate voltage is provided. Some appliances were even destroyed due to high and low voltage supply. To solve this type of issue we are posting a very simpler and more useful project called “High Low Voltage Cutout Circuit”. Previously we had already posted various types of appliance protecting circuits on bestengineeringprojects.com like: Auto Cut Circuit for Over and Under Voltage High Current Regulator Circuit…

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Blown Fuse Indicator circuit

Engineeering Projects
blown fuse indicator circuit

Blown fuse indicator circuit of the kind described here provides an ideal solution in such case. It indicates whether fuse is good or blown by generating audio alarm and glowing LED. Circuit Description and Working of Blown Fuse Indicator This circuit is based on 555 timer wired as an astable multivibrator. When the fuse is not blown, positive voltage is applied at junction P (IC’s pins 2 and 6) through R2 and D1. This holds the voltage at the junction above 2/3 Vcc and prevents the IC from oscillating. When…

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Self Resetting LDR Alarm using Timer IC 555

Engineeering Projects
self resetting ldr alarm using timer ic 555

One of the most common projects made in electronics is burglar alarm or security alarm. If your search over the internet there are dozen of burglar or security alarms but the problem with this circuit is, it does not have a self-resetting option i.e. continuously sounds till someone switches off the system. Thus, in order to solve this type of problem (self-resetting) we have come with the project Self Resetting LDR Alarm using Timer IC 555. This circuit detects the interruption of light and produces sound for a definite interval…

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Delay Starter using 556 Dual Timer IC

Engineeering Projects
delay starter using 556 dual timer IC

Delay Starter using 556 Dual Timer IC: The systems using compressors such as air conditioners, refrigerators, freezers etc. are to be cared for properly to avoid damage to the compressor due to fluctuations in the line voltage. After switch off, if is switched on immediately, the compressor may fail. This is avoided by connecting it through DOL (direct on line) starter. The DOL starter trips the supply as the power fails. When the power resumes, the starter has to be started manually. But the presence of an operator round the…

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Automatic Fence Lighting with Alarm

Engineeering Projects
automatic fence lighting circuit with alarm

Today, in this article we are going to teach you how to make an automatic fence lighting circuit with an alarm using op-amp 741 and timer IC 555. Fence lighting is used for security purposes and can be used at various places like door alarms, pathway alarms, etc. where monitoring is required. Various types of fence lighting circuits are already available over the internet but the problem with that circuits is they required high precision alignment. To overcome this problem, we designed a very sensitive automatic fence lighting circuit. We…

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Motor Controller Circuit for Washing Machine

Engineeering Projects
motor controller circuit for washing machine using 555

Washing machines have been an important part of our daily life. But, the issues we have to deal with in a few months of using them make it more difficult. Previously, we had already posted the Automatic Washing Machine control circuit. It is because most of the washing machines have a single-phase motor incorporated in the system and the timing and direction of the motor are controlled by an external mechanical switch which gets worn out so easily and is not economical on the other hand. And, the project “Motor…

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Top 10 Electronics Mini Projects using IC 555

Engineeering Projects
electronics mini projects using ic555

Here we had compiled a list of the top 10 Electronics mini projects using IC 555 that would be cool, useful, and efficient to design in free time. Before listing the top ten electronics mini projects using IC 555 we would like to clear some points like operating voltage, temperature, applications, etc. of timer IC. So, what is timer IC 555? Timer IC 555 is a powerful timing circuit that is popular for the production of accurate and stable time delay or oscillation. It is much reliable, easy to use,…

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Automobile Brake Failure Indicator

Engineeering Projects
automatic brake failure indicator circuit

Almost 40% of accidents occur because of brake failure issues. With early identification of this condition, we can reduce the accident rate. The project ‘Automobile Brake Failure Indicator’ is the solution to this global issue. You might be wondering how this project is responsible to lower the accident rate. Well, this indicator circuit keeps an eye on the condition of the brake at regular intervals and provides an audio-visual indication of the situation. The project includes two LEDs and a piezo buzzer as indicators. Under normal circumstances when the brake…

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CCTV Switcher Circuit using Timer IC 555

Engineeering Projects
cctv switcher circuit using 555 ic

Here is a simple project CCTV Switcher circuit using timer IC 555 and decade counter IC 4017. The basic function of this project is to switch between different CCTV cameras sequentially i.e. one CCTV output is displayed on TV at a time. A CCTV (Closed Circuit Telephone) camera is used for video surveillance by using a video camera. Sometimes one CCTV camera is not sufficient for surveillance entire area thus we have to use multiple cameras to cover the entire area of surveillance. The circuit posted here control four CCTV…

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Sound Activated 0-30 Minutes Timer Circuit

Engineeering Projects
30 minutes timer circuit using 555

The project “Sound Activated 0-30 Minutes Timer Circuit” is a simple project designed using timer IC 555 and LM324 Quad op-amp IC. By using this project, one can activate or de-activate the appliance using sound, and the time delay can be adjusted from a few seconds to 30 minutes. Application: The applications of the project Sound Activated 0-30 Minutes Timer Circuit are: Used as a sound-activated burglar alarm. Used as timer circuit in kitchen, house. used for appliance operations like refrigerators, TV, Rice-cooker, etc. by adjusting the time as per…

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