In cars or automobiles, LEDs have grown to be the preferred choice of lighting. Whether it’s the rear tail-lights or the tell-tale indicators in the cluster as indicated in Figure 1 below, all incorporate LEDs nowadays. Their compact dimensions helps versatility in design and offers the prospective to be as durable as the vehicle’s life […]
Circuits
LM386 Amplifier Circuit [Working and Application Circuits]
The IC LM386 is a 8-pin tiny power amplifier chip, specially made for operating under relatively low voltage parameters, yet provide considerable amplification. IC LM386 amplifier circuit becomes suitable for applying in small low power audio gadgets like in FM radios, door bells, telephones etc. Let’s begin the IC LM386 amplifier explanation by studying its absolute maximum ratings […]
Voice/Audio Recorder Playback Circuits
In this article I have explained a single chip circuit which can be used for recording and playing back short voice clips or any audio clip ranging from 20 to 60 seconds. About the IC APR9600 The incorporated IC APR9600 is a programmable voice recorder chip which facilitates infinite number of recording/erase of audio files […]
How to Design High-Pass and Low-Pass Filter Circuits Quickly
In this post I have explained how to design audio filter circuits such as high pass filter and low pass filter circuits effortlessly without going through the hassles of complex simulation and calculations. The presented designs will enable creating filter circuits only for the desired specific frequency bands and block all other unwanted frequencies. What’s […]
Simple 20 watt Amplifier Circuits
This article is written with an intent to build a simple 20 Watt Amplifier. All the amplifier circuits presented below will provide a full output power of 20 watts into 8 Ohm loudspeaker. By: Dhrubajyoti Biswas Why a Single Ended Class-A Amplifier A single-ended Class-A amplifier is probably one of the best example when it […]
6 Simple Class A Amplifier Circuits Explained
In this post I have explained 6 simple, cheap class A power amplifier circuits which can be used for any small scale audio amplifier application. By: Dhrubajyoti Biswas 1) Zero Negative Feedback Amplifier This following data will detail how to build an amplifier having zero negative feedback which implies building a zero component amplifier. The […]