Fire Alarm

Fire Alarm Project Here is a simple circuit which can be used as a Fire Alarm. 3 Volt is enough to operate this project. There is not much to the circuit. The IC UM66 is connected to its supply and its output is fed to a transistor for amplification. UM66 Read more…

Charger

Ni Cd Battery Charger The nickel-cadmium battery is a popular type of rechargeable battery for portable electronics and toys using the metals nickel (Ni) and cadmium (Cd) as the active chemicals. They are sometimes used as a replacement for primary cells, such as heavy duty or alkaline, being available in many of the same Read more…