Stereo Digital Volume Control

Here is the circuit diagram of stereo digital volume control. This circuit could possibly be applied for upgrading your manual volume ma...

Surround Sound Decoder

The following diagram is an small surround sound decoder schematics. You may use this decoder surround sound systems for your home audio s...

Sleeping-Aid

  Device purpose: Many people experienced sleeping well in natural surroundings, into a tent or a wooden hut. This fact is due not only ...

FM transmitter (1Km Range) for MP3/MP4 Player, PC, mobile Phone – using 2n2218 & 741

  Evolution FM transmitter (1Km Range) with 2n2218 with audio amplification step using LM741 op amp with audio input for MP3, MP4, mobil...

LM317 Calculater toolkit

Program to calculate the resistance to an LM317 / LM117. Interesting for those who want to design circuits with donte horny LM317 re...

Turns your PC into a flexible & powerful audio signal generator

SigJenny turns your PC into a flexible and powerful audio signal generator for free can create multiple waveforms, sweep, fire single or...

Remote-Controlled Fan Regulator Circuit Diagram

Using this circuit, you can change the speed of the fan from your couch or bed. Infrared receiver module TSOP1738 is used to receive the...

Dark Activated Lamp using Triac

 This circuit will turn on an AC Bulb when the sun sets, the working of the circuit is simple and the heart of this circuit is an LDR (Lig...

IR Transmitter Tester (New version)

  IR(infrared) transmitter tester V2.0 The first version of this circuit can find Here . This new version is perfect because it includes ...

2.1 speaker systems satellite subwoofer using TDA2030 (3 x 18 Watts)

  This project is Power Audio Amplifier with TDA2030 2.1 Chanel – 3 x 18 Watts – Sub-woofer – Complete With PCB suggestion and power sup...