Hacks of Electronics
The Unijunction Transistor (UJT) is a three-terminal semiconductor device that is mainly used for triggering, pulse generation, relaxation oscillators, and phase control circuits. Unlike the Bipolar Junction Transistor (BJT) or Field Effect Transistor (FET), the UJT does not function as an amplifier; instead, it acts as a switching device with negative resistance characteristics. The UJT […]
Most people never think about transistors. They’re too small to see, hidden away inside the gadgets we use every day. But without them, modern electronics wouldn’t exist. From the phone in your pocket to the microwave in your kitchen, transistors quietly do the heavy lifting. So, what exactly are they, and where do you find […]
A clap switch circuit is a popular DIY electronics project that lets you control an electronic device by clapping your hands. The circuit uses the sound of a clap as a trigger to turn the device ON or OFF. It finds wide use in home automation, interactive projects, and temporary lighting solutions. In this article, […]
In modern electronics, signal isolation between different parts of a circuit is crucial for protection, noise reduction, and system stability. Optocouplers, also known as optoisolators, play a vital role in achieving this electrical isolation while allowing signal transmission. This article provides a thorough exploration of optocouplers (Optoisolator / Photocoupler), including their construction, working principles, advantages, […]
We see numbers displayed on many electronic devices around us, like digital clocks, calculators, microwave ovens, and scoreboards. But have you ever wondered how these numbers appear on the screen? One of the most common ways to show numbers in electronic devices is by using a Seven Segment Display. It is a simple electronic component […]
In the field of electronics and optoelectronics, light-sensitive devices play a crucial role in converting light signals into electrical signals. Among the most widely used light sensors are the Photodiode, Phototransistor, and Photoresistor (also known as Light Dependent Resistor or LDR). Though they all respond to light, their construction, working principles, advantages, disadvantages, and applications […]