Free Project Circuits

The Touch ON and OFF Switch Circuit is built around a 555 timer by making use of the default properties of the Pins of the

Many electrical and electronic appliances require DC or AC power for their operation. While AC power is made available mostly through AC supply mains, DC

A car battery is a typical lead acid battery with about 6 cells, each of 2V such that the total battery voltage is around 12V.

We know the importance of notice boards in public places like railway stations, bus stations and airports. But changing notices day-to-day is a difficult task.

A GPS module is a device that uses Global Positioning System to determine the location of a vehicle or person. GPS receivers are used to

We have already studied how to control the home appliances using RF communication in the post RF Remote Control Circuit for Home Appliances. Now let

Audio crossover is an electronic filter used in audio applications to send the appropriate signal to the speakers or drivers. Most of the speaker drivers

This circuit protects the costly equipment like TVs, air conditioners, Refrigerators, etc. from high voltages as well as low voltages. If the supplied voltage is

GSM controlled robot or SMS controlled robot is a wireless robot which performs the necessary actions by receiving a set of instructions in the form

Land mines buried under the ground causes threat to the lives and affect the economy of the nation. Detection and removing of these mines manually