Category: 555 Timer Projects

Audio Amplifier Circuit Using 555 IC

Engineeering Projects
Timer IC 555 based audio amplifier IC

As being electronics hobbyists we all know about timer IC 555. Timer IC 555 is one of the most popular IC of all time because of its application. This IC has various applications like clock pulse generator, time delay circuit, etc. Here, is another application of 555 timer IC i.e. Audio Amplifier using 555. We are going to use a 555 timer IC rather than a conventional amplifier IC because it has unique features like low audio distortion and high efficiency with a high base. PWM is the method by…

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RJ45 Cable Tester Circuit

Engineeering Projects
RJ45 cable tester using 555 IC

In the field of networking, RJ45 is the most common cable used. This cable consists of multiple wires clamped within a single plastic tube and in such a case, there is a high probability that the project implementing RJ45 will not work efficiently. Rather than isolating the entire circuit to check the fault, it is considered wiser to test the RJ45 cable which causes failure most of the time. And, here is the tester circuit called “RJ45 Cable Tester Circuit” which is used to test RJ45 cable either in straight-through…

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AC Voltage Stabilizer Circuit using 556 IC

Engineeering Projects
AC voltage stabilizer circuit

AC Voltage Stabilizer Circuit using 556 IC Various types of AC voltage stabilizer circuits had already been posted on bestengineeringprojects.com like Versatile Auto Cut-off Unit Automatic Voltage Stabilizer Circuit Overvoltage Protection Circuit The circuit posted here is a cheap, versatile, and high-performance AC voltage stabilizer using dual timer IC 556 IC. The circuit makes use of most of the features of dual timer IC 556, namely, the four voltage level comparators, two high current sourcing/sinking outputs, two discharge transistors, and the ability to provide hysteresis with the help of its…

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Servo Motor Tester Circuit Using 555 IC

Engineeering Projects
Servo motor tester circuit using 555

I believe testing circuits are a must for project geeks since these testers save so much time in debugging circuits. People invest all their efforts and spend so much time completing one project but most of the time they don’t get the desired output. There can be multiple reasons behind this and generally, it is because the components like servo motors are at fault. The project Servo Motor Tester Circuit Using 555 IC was used in the project after isolating it from the project and helping us to detect if…

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DIY Hearing Aid Circuit using 555

Engineeering Projects
diy hearing aid circuit

The general circuit of Hearing Aid available over the internet used a normal transistorize circuit thus it consumes more power. So, here we are concentrated to design a circuit that consumes less power, DIY Hearing Aid Circuit using 555. For that, the circuit present here of DIY Hearing Aid Using 555 has an automatic triggering mode which consumes 96 mA at the time of amplifier trigger or you can say when sound is detected else it consumes only 6 mA which is very less. Other than less power consumption the…

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Rotation Sensor using 555 IC

Engineeering Projects
circuit diagram of rotation sensor using 555IC

In this section, we discuss another application of the most popular IC, the 555 timers. Introduced in 1972 by the Signetics Corporation as a bipolar integrated circuit, the 555 is also available in CMOS technology and from several manufacturers. There are various projects we had already posted in the timer IC 555-based projects section. Now, we have come up with another interesting project called rotation sensor using the most popular IC of all time 555 Timer IC. When more conveyors or equipment are used in the processing system and anyone…

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DIY Strobe Light Circuit

Engineeering Projects
circuit diagram of DIY strobe light

Here is one another application of one of the most versatile IC NE555, the DIY Strobe light circuit. A strobe light is also called a stroboscopic lamp and is used to produce a regular flash of light. The general strobe light has a very high flash energy of about 150 joules and very few milliseconds of discharge time. Due to this property, it emits flash power of several kilowatts. Various types of strobe light circuits using xenon flash lamps, flash tube, LEDs, etc. posted on bestengineeringprojects.com are listed below:- High Brightness…

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Relay Tester Circuit

Engineeering Projects
circuit diagram of relay tester

Here is the relay tester circuit using timer IC 555 which is used to measure pull-in and release voltage of relays ranging from 6V to 28V DC. Relays are probably the simplest electromechanical devices, yet they are the most important components of many industrial and domestic electrical equipment. All too often, it is a hardship for the equipment manufacturers to discover that the commercial quality relays of similar types have a wide range of operating voltage. Many times, it is found that the relay contacts will not close properly. Many…

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Sound Operated Intruder Alarm with Flash

Engineeering Projects
circuit diagram of sound operated intruder alarm with flash

Sound Operated Intruder Alarm with extra features like a flashlight, circuit diagram, description with working principle, and parts list. Introduction to Sound Operated Intruder Alarm with Flash If you have already gone through the previous project Op-amp 741 Based Sound operated Light on our website, then for you this project is a transformation of that generalized project into a specialized intruder’s alarm project. Why should one invest much effort, time, and money to recreate a new circuit when a slight modification to the existing project works fine? This is the core…

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Fire Alarm Using Thermistor and NE555

Engineeering Projects
circuit diagram of fire alarm using thermistor

If we search for fire alarm circuits on the internet, we can find a long list of such circuits. Most of those circuits are quite expensive and also the components may not be easily available. So, here we have presented a simple and inexpensive project of ‘fire alarm using thermistor and NE555’. Where a thermistor is the main component and is used as a temperature sensor of the fire alarm. Talking about the working principle of a thermistor, it works in the same way a normal LDR would work i.e.…

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