ELECTRICAL AND ELECTRONICS PROJECT COLLECTION

FM transmissions can be received within a range of 40 km. If you are in fringe areas, you may get a very weak signal. FM DXing refer...

Me and a friend are both trying to build a millipede. Because of obvious reasons, the millipede is NOT going to have 1000 feet!!! Instea...

Overview The circuit was designed to create an auto fade circuit that will be used to provide a mechanism of bringing the voice on top...

The following schematic shows the design of a Parallel Port Interface Circuit Diagram using 74HCT373. The 74HC/HCT373 are high-speed Si-gat...

This Circuit converts a voltage control output from a Process Controller to be converted into a Current Control if the AC-Drive or Valve ...

This two transistor AM radio circuit is also called “mini-radio”. It uses only 2 transistors and few passive components which makes is ver...

Filters with high orders are designed usually with 2 or more cascaded sections. This order 4 filter need only one OA IC , so we can achieve...

This AC motor speed controller can handle most universal type (brushed) AC motors and other loads up to about 250W. It works in much the s...

author: Andy Collinson e-mail: anc@mitedu.freeserve.co.uk web site: http://www.zen22142.zen.co.uk I've had a few requests for a quiz...

Hello… HELLO! Are you deaf? Do you have disco ears?’ If people ask you this and you’re still well below 80 , you may be suffering from hea...

This circuit was designed to assist the installation of TV antennas. The signal is monitored using a small portable TV set and this circuit...

A crucial failing of proximity detectors is their unreliable and tricky nature. This is where they are used to detect humans, not to spe...

This simple circuit uses an incandescent lamp to detect airflow. With the filament exposed to air, a constant current source is used t...

Circuit diagram   Notes: This sensitive sound operated switch can be used with a dynamic microphone insert as above, or be used with an...

A Recent History By now, the Wart Zapper has quite a history behind it. Three different embodiments have been published in three major mag...