Sound Operated Music Bell

Introduction Picture a world where a beautiful melody chimes in response every time a sound is made. With a bit of creativity and some basic materials, this world can be a reality with the creation … Read more

Sound Operated Music Bell

DC Voltage Doubler Multiplier Circuit

Transformers are widely used for converting AC voltage for step-up or step-down voltage purposes. But for converting the DC voltage values from one value to another, we cannot use transformers. Therefore, in such applications where … Read more

DC Voltage Doubler / Multiplier Circuit

12V Fluorescent Lamp Driver

Before the invention of LED lights, fluorescent lamps existed everywhere. They are still highly in use. The fluorescent lamp is a mercury gas discharge lamp that uses fluorescence to generate light. The lamp is used … Read more

12V Fluorescent Lamp Driver Circuit

How to make a Laser Security Alarm

Introduction Safety is a major concern around the World. Many people employ gatekeepers, for this purpose but many times these guards also get hit by intruders. The LASER-Based Security Alarm is a safety purpose circuit … Read more

How to make a Laser Security Alarm

555 Timer as Monostable Multivibrator

Introduction A monostable multivibrator is a synchronous or asynchronous sequential circuit that is widely used in electronic circuitry. Certainly, Multivibrators are from the family of oscillators that are often known as relaxation oscillators. They have … Read more

555 Timer as Monostable Multivibrator

Astable Multivibrator using 555 Timer

Introduction Astable multivibrator mode has another name that is “the fast running or self-trigger mode”. But, It doesn’t have any stable state like mono state multivibrator. However, a stable multivibrator has two quasi-stable states that … Read more

Astable Multivibrator using 555 Timer

555 Timer-Ramp Generator

Introduction A ramp generator is a signal generator that produces a ramp waveform at output. The waveform increases uniformly as the capacitor gets charged and reaches the peak and the waveform decreases promptly as it … Read more

555 Timer-Ramp Generator Circuit

Police Siren Circuit using NE555

Introduction We have heard many electronic sounds like a doorbell, phone alarm, and vehicle horn but the sound which makes people scared and worried is the siren of a police van. It would be a … Read more

Police Siren Circuit using NE555

Infrared Sensor Detector Circuit

Introduction As electronic students, we have always heard that IR technology is used extensively in the Industrial sector for making different devices and products. For example, the television we used in our homes uses an … Read more

Infrared Sensor/Detector Circuit

PWM Lamp Dimmer using NE555

Introduction Ever wondered how the dimming lights work? Ever marveled that how its light intensity goes higher and lower? In this project, we are going to explore an efficient PWM lamp dimmer using a 555 … Read more

PWM Lamp Dimmer using NE555