LA4440 Audio Amplifier: The LA4440 is an integrated circuit (IC) that is used as a dual audio power amplifier. It is commonly used in audio amplifiers and other electronic devices that require audio amplification. To determine if the LA4440 is working properly, you would need to test it by measuring its output voltage and comparing it to the expected values under different loads and input signals. Additionally, you could also perform a visual inspection of the device for any physical damage or signs of overheating. LA4440 Audio Amplifier Circuit A simple audio amplifier based on the LA4440 IC . This will take the headphone level output from your computer and amplify it to drive a pair of external speakers. If you are listening to music or movies on laptops and computers, this is a small project that is useful to you. The notebook speakers are never strong enough to offer a satisfactory listening experience. They give users the ability to listen to something, but for anything like mus...

How To Make An Electric Extension Board Wiring In this video how to make an Electric Extension Board wiring with two SPST Switches which means single pole single throw and two 3 Pin Sockets, and for this electrical extension box I used 3-Core cable and its length 3 meters, In this Extension Board mainly used for workbench works like soldering iron for repairing, television and power supply for domestic appliances. Homemade Extension Board Making Video: