Recycle Free Li-ion battery from E-waste
We are going to show how to recycle free 18650 Li-ion battery from electronic waste. Our experience using it for almost a year, it runs well. Read more
Simple Automatic Motion Sensor Light Circuit
This is a Simple Automatic Motion Sensor Light Circuit. When we use battery electricity for lighting—even with LED light bulbs that consume very little power—for an extended period of time, it also drains much of the battery’s power. So, is there a way we could save as much electricity as possible? In some places where … Read more
Simple Motion Sensor Alarm Circuit Diagram
You have a private area, right? If you have this motion detector alarm circuit. It will reduce your worries. Imagine a big bear is coming to the behind of your house. Then, the siren alert. The big bear is shocked and runs away. You and your family are safe. Is it great? Read more
Ghost Detector Static Charge Monitor by Lennie
This is a Ghost Detector circuit or Static Charge Monitor circuit by Lennie. The Label was printed on card stock; clear coated with light coats of spray enamel; cut, and attached down a tomato paste can. This article was copied from Lennie Zink’s article.
Precision Full & Half-wave rectifier circuit using OP-AMP
Learn types of rectifier circuit using op-amp. A diodes cannot rectifier ACV lower mV. But 741 rectifiers can help it, in filters, signal measurements, etc. Read more