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 […]
The term “Piezo” in Piezoelectric Transducer originates from the Greek word piezein, meaning “to press” or “to squeeze.” This etymology reflects the fundamental principle of piezoelectricity—a phenomenon in which mechanical pressure generates an electrical voltage. Piezoelectric transducers (sensor / Actuator) harness this effect to convert mechanical energy (such as pressure, force, vibration, or acceleration) into electrical […]
A Voltage Controlled Oscillator (VCO) using 555 timer is an oscillator whose output frequency is directly dependent on the input control voltage. VCOs are widely used in communication systems, tone generators, frequency modulation (FM), and various signal processing applications. One of the simplest and most economical ways to build a VCO is by using the […]
An Astable Multivibrator is an essential oscillator circuit in electronics, used to generate continuous square wave signals without any external triggering. It is called “astable” because it has no stable state — both transistors in the circuit keep switching ON and OFF alternately, producing a continuous flip-flop output. In this article, we will explore a […]
A sine wave generator is a circuit that produces a smooth and continuous sine wave output. One simple and widely used method for generating sine waves is by employing an RC Phase Shift Oscillator. In this article, we will discuss how to design a simple sine wave generator using an RC Phase Shift Oscillator with […]
Let’s get started with types of oscillators, how they work? and what are the common applications of oscillators. What is Oscillator? Oscillators are electronic circuits that generate periodic waveforms from a DC source without any external input signal. They are widely used in various applications, including clocks, radios, computers, and signal processing. Working of Oscillator: […]