How to Drive a DC Motor with a BJT Transistor
DC motors grant electronic devices the force to move, push, pull, block or repel other objects around or even themselves. Fortunately, DC motors aren't difficult to understand or to control.…
How to Switch a LED easily with a BJT Transistor
In this post, you will learn to how to switch a LED with the 2N3904 and 2N3906 BJT transistor. First, you will start to evaluate the current capabilities of the…
Increase the Battery Life of an UPS by adding a Car Battery
To ensure the stability of electricity for your computer or server, you need to provide a reliable power source. In this post, I am going increase the battery life of…
Old AC DC adapter, how to reuse them with electronics.
So, which are the benefits of using and old AC/DC adapter, anyway? Recycling is perhaps the most important but I have done also for other circuits, such as Arduino, motors,…
Voltage Divider applied to a circuit: what you need to know
This electric principle comes very handy in integrated circuits (IC). One of the most successful ICs in history, the 555, depends on them. Many microcontrollers have some kind of voltage…