Automatic railway signals are meant for efficient movement of trains, without colliding. The track is divided into blocks or sections. At the entry of each section there is a signal. […]
Simple Mains Voltage Stabilizer Circuit
Manual transformers are good for jobs where the equipment is being attended to personally, such as while viewing a TV. Also an automatic transformer would be unacceptable for viewing a […]
Simple Light Activated Switch Circuit
The light activated switch circuit works on a very basic principle, that of amplification of the current produced by a photo-transistor when light impinges upon it. The current is amplified […]
Simplest Homemade Electric Guitar
Do you wish to convert your own Hawaian guitar into a simple electronic guitar ?Well here’s an excellent idea for you. It will cost you about $1 only. , You […]
Simplest Water Level Controller Circuit with Buzzer
This simple and inexpensive circuit sounds an alarm Ca whistle) when water level in a Container, such as an over- head water-tank, reaches a predetermined level. The basic circuit is […]
How to Calculate Timer Circuits using CMOS Gates
There are many occasions when a switching delay is required. One way of achieving this is to use an RC network and an inverter (see figure 1). This is quite […]