Here is an interesting project of a smart and efficient electronic combination code lock circuit. The circuit will provide a code lock device that is using a few 555 timer ICs and CD4017 decade counter … Read more

Smart Combination Lock Circuit

high voltage detector

In this tutorial, we are making a sudden high voltage detector alarm circuit. This circuit is used for indicating when the mains voltage rises suddenly or during high voltage spikes. These circuits are really useful … Read more

Sudden High Voltage Detector Alarm