Basic projects

In this category, posts about basic projects are available. Here i will only use the basic electronics component to make projects.  Microcontroller projects will not present here.

AC voltage drop formula and AC dropper circuit

Often in many project you need to have a mains power supply. Let’s say you are doing home automation project, you need to power the circuit using AC supply. Because battery is an appropriate option in that project since you need to fit the circuit in electric board of your home. So we have to …

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Class D amplifier explained

There are many types of amplifier. Class D amplifier is a type of them. It is very efficient amplifier (efficiency is up to 90-95%). This amplifier works on PWM technique. Audio signal applied to it first get converted into pulse width modulated signal and then it is amplified efficiently. After amplification it is converted back …

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Buck Boost converter working principle, Circuit and applications

Buck boost converter is a DC to DC converter. A DC to DC converter converts the voltage levels of DC sources. We call it DC to DC converter because it take DC voltage as input and gives also DC voltage as output. I have published two separate project articles on buck converter and boost converter …

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LM317 variable voltage regulator module

Linear voltage regulator and its application

To maintain steady output voltage from any power source we use linear voltage regulator. The circuits or devices which are very sensitive to voltage change uses this devices. Its resistance vary according to voltage and load attached to it. You can think it as a voltage divider circuit whose resistor can vary itself automatically according …

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boost converter module

Boost converter circuit and its application

Boost converter is a DC to DC step up converter. That means it converts any DC voltage to higher DC voltages. It doesn’t affect power much more so current will step down. Let’s say that we have 3.7 volts battery and we want to power a 5 volts device. In that case we need boost …

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Short circuit

Overcurrent or Short Circuit Protection

In a short circuit condition, a large current flows which are never intended. In this case we might damage our power source, our electronics devices and every associated component. It also risk of fire due to excessive heat. To avoid the short circuit, we need to design a circuit and connect it in between our …

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Buck converter and its application

In the project of dc dimmer circuit we saw that how we can step down the voltage using PWM. But in that circuit there is a problem of high voltage peak. That can destroy the sensitive electronics devices. For that kind of electronics devices there is another step down circuit called buck converter. Buck converter …

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Smart Security alarm circuit

In this project we will design a smart security alarm circuit which will detect and create unwanted activity and alert us using a buzzer. In this project we will design the circuit from the prospective of securing the bikes. So, here unwanted activity is shocks. To detect the shocks we can use piezoelectric disk. For …

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Battery charge indicator

In a battery powered electronics devices you often need to know the charge status of the battery. In this project we will create such circuit which can indicate the percentage of left energy in the battery. For indicating the charge percentage we will use LEDs. To drive the LEDs according to battery voltage, we can …

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single phase soft starter circuit diagram and working

Some electrical component comes with inrush current problems (like motor, capacitor, buck/boost converter etc.). It basically means that these devices draw very large current during starting. Let’s say you have connected these devices with some safety circuit and power for power it up. But because of its inrush current as you power it, power supply …

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