The proposed circuit is an oscillator circuit designed to generate a loud pistol like sound over a loudspeaker. A pistol sound generator circuit presented here can be used as button operated starting sound during racing events or marathons, or simply to deter wild animals and thieves in remote areas. The concept could be also effectively […]
Newly Updated Circuit Projects:
LM4862 Amplifier Circuit – A Better LM386 Alternative
The LM386 based amplifier is still very popular as one of the smallest sized amplifier chips. However, the LM386 is not perfect and has a few drawbacks and limitations. As shown below, the LM386 works with large electrolytic capacitors, which makes it bulkier and costlier, and causes it to be prone to distortions with age. […]
USB 5V Audio Amplifier for PC Speakers
Audio amplifiers which are designed to work with a 5 V supply from a USB socket such as from a computer USB are called an USB amplifiers. In this article I have explained how to build a simple 3 watt amplifier circuit which can be powered directly from a computer 5V USB port for driving […]
Making a Center Speaker Box C80 for Surround Sound Systems
A Hi-Fi surround sound system (5.1) typically consists of 4 speakers at the corners of the room, and a center speaker just below or above the TV or the video system. This center speaker becomes the main speaker box of the surround sound since it is responsible for delivering the high quality voice output from […]
Simple Mini Audio Amplifier Circuits
In this article we are discussing a handful of simple, mini audio amplifier circuits which can be built quickly for amplifying very tiny input signals into audible speaker outputs. 1) 1 Watt Amplifier Circuit The first simple mini audio amplifier circuit works with a ‘complementary’ output stage, having a single NPN and a single PNP […]
Touch Volume Control Circuit
This touch volume control circuit has two touch pads which enable the user to increase or decrease the volume of an audio amplifier simply by touching the relevant touch pads. The advantages of this solid-state volume control are: very long life due to the absence of any wear and tear, quick and easy finger touch […]