A simple RGB (Red, Green, Blue) moving or scrolling LED display can be made using a few 4017 ICs. Let’s learn the procedure in detail. Understanding RGB LED RGB LEDs […]
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Sine wave PWM (SPWM) Circuit using Opamp
SPWM refers to Sine Wave Pulse Width Modulation which is a pulse width arrangement in which the pulses are narrower at the start, which gradually get broader at the middle, […]
Solar Insect Killer Circuit for Protecting Crops in Farms
The insect killer circuit presented here is designed to attract insects during night, and electrocute them through a high voltage mesh trap. The unit can be installed in farms for […]
Solar Insect Repellent Circuit for Protecting Crops in fields
The post explains a simple to build ultrasonic insect repellent circuit which can be installed in farms and used by the farmers for driving away all sorts of insects, bugs, […]
Mosquito Killer Circuit with Window Trap
The post explains a simple mosquito electrocution net, or mesh circuit which can be easily built and installed on a home window for blocking and killing an in-surge of mosquitoes. […]
Industrial Valve Switching Detector Indicator Circuit
The following post explains a circuit idea which can be used for identifying the switching pattern of set of valves from a remote location, using just two wire from the […]