Free Circuit Diagram

This is a video tutorial of AND/OR gate. This video explains how the AND gate and OR gate works. AND gate has two input and one output. the rule of AND gate is when both input are “1″, the output is 1(on). The OR gate also has two input and one output but its rule [...]

This is a video tutorial about RJ45. This video shows how to punch down an RJ45 keystone jack using a impact tool. The first thing that we gonna do is strip the wire. It is very important because when we connect the wire, it can cause the problem. And then, put the wire on RJ45, [...]

This is a video tutorial of desoldering. This video shows the technique of desoldering the IC. The wrong technique will cause the overheating to the IC. There are two thing that are required to desolder the IC, they are solder and solder sucker. That would be easy if we use the solder in the left [...]

This is a video tutorial of logic probe or logic analyzer. This video shows what is logic probe and how can the logic probe analyzes. There are two main operation in the logic probe work, first is timing analyze and second is state analysis. In this video also shows the different between them. Beside [...]

This is a video tutorial for Function generator. This video explains how to use function generator and how it works. The function generator is used to generate waveform. The waveform that is can be generated by function generator are sinewave, squarewave and trianglewave. Using the function generator we can adjust the frequency, amplitude and DC [...]

In this video tutorial,  you can learn how to make a LED flasher circuit using 555 IC. The project uses a breadboard, so you don’t need any soldering work. A good start for do it yourself  (DIY) project. [Video tutorial source: Youtube.Com]