3 Over & under voltage protection circuit for Induction Motor
These are over voltage and low voltage protection circuits, first is simple use LM324 and relay, second is LM393, timer delay IC. both to protect any load. […] Read more
Meters & Detectors
Simple Light meter circuit You can do!
There are many ways to build a light meter circuit. It is a tool to measure the quantity of light, widely used to a photography, To decide the correctness of the exposure.Sometimes, we are use with other works, such as my son likes to use in science experiments, which do not need to have high … Read more
3 Simple AC Wattmeter circuits
If you are looking for AC power measurement. To use it just a little, which is not worth it. When we need to buy an expensive tool. Because use little does not need high accuracy. I would like to propose the concept of wattmeter circuit in such a way easy as it was.I collected all … Read more
Simple level voltage detector circuit using LM741
This is a really Simple level voltage detector circuit. I like it so much because it causes me to know the principle of the comparator circuit form. As shown in Figure below, We use the LM741 OP-AMP circuit highly popular is the base of a circuit. Testing As the video below. When we set all … Read more
Many Simple LED AC mains voltage & current indicator circuits
We have many ways to indicates an AC line. A good way, the AC mains voltage indicator circuit with a LED. It may be the best choice. It saves and to be easy. Read more