This super simple circuit design of a gsm car security system really works.Don’t believe it? Find out and learn the simple method of constructing it. How would you feel if you had the power of controlling your vehicle through your own cell phone, from any part of the world? Learn more how to build a […]
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5 Simple Siren Circuits you can Build at Home
In this post I have explained about a 5 simple siren circuits, using Arduino and also with ordinary components such as transistors and capacitors yet is able to produce an alarm sound at an excruciating level. The idea was contributed by “Abu-Hafss” Deeper in the article we also learn to make an advanced Arduino based […]
How to Build a Microphone Amplifier Circuit
In this article we are going to see how to build a microphone amplifier circuit with operational amplifier LM324. This circuit can be used as good pre-amplifier for audio projects. Selecting an Opamp The heart of the mic amplifier circuit is an op-amp LM324 which is quad op-amp moulded in single IC. We are going […]
Build this Open Baffle Hi-Fi Loudspeaker System with Crossover Network
The open baffle hi-fi, high quality speaker design introduced here provides a substitute to the common loudspeaker housing. Its sound emission pattern resembles electrostatic pattern. It works without enclosure or housing for the woofers, although employs normal dynamics for the drive units. The reproduction provides extremely ‘spacious’ impact on the ears. Contributed by: Monty Trivedi […]
Build this Subwoofer Amplifier Circuit [Mini Ground-Shaker]
A subwoofer amplifier is basically a power amplifier designed to filter and extract the low frequency content from the input audio signal and amplify it to the desired levels. This allows a sound reproduction that is enhanced with deeper bass, generating a concert hall like, or an immersive theater like sound effects. By: Sania D’souza […]
Build this 85V–265V AC to 12V 5A SMPS Design Using UC3843 (With Calculations)
This thing is a full SMPS design using UC3843, which takes wide AC input from 85V AC to 265V AC, then gives out 12V DC at 5A, so now it is like a universal input supply, which can be used for 110V AC supplies and also for 220V AC input supplies… Input Protection Stage At […]