Description. This is a simple but effective code lock circuit that has an automatic reset facility. The circuit is made around the dual f...

Description This is the circuit diagram of a simple electronic combination lock using IC LS 7220.This circuit can be used to activate a r...

Here is a simple 3 input mic mixer circuit using the popular uA 741 ICs. Four 741s are used here.IC1, IC2, IC3 are used as preamplifiers. T...

This circuits uses very few component and gives melody sound. It uses 3 terminal IC UM66 and can be build small enough to be placed inside...

Now, a day automation task is necessity not only in industrial sphere but even in the domestic sphere. The project universal timer in ...

TX-2B / RX / 2B  5 channel radio remote control. This article is about a simple 5 channel radio remote control circuit based on ICs TX-2...

Here is the circuit diagram of a seven segment counter based on the counter IC CD 4033.This circuit can be used in conjunction with various...

IR based entry detector alarm is useful for someone crosses the Gate or door of house when is left open.. It can alarm you and notify you t...

Here iscable LAN testercircuit. Thecable LAN testercircuit can also to test cable on telephone, coaxial cable, Lan cable and other. This...