Free Circuit Diagram

A LED flasher circuit can be built using only one transistor and few passive components. This circuit is a proof of Negative Resistance (the Esaki or Tunnel Diode in from 1957) The Transistor is coupled / Biased in the Opposite polarity. [Video tutorial source: youtube.com]

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 [...]

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]