Wednesday, July 1, 2015

Solar Insect Killer 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 protecting crops from potentially harmful insects. The unit being solar powered does not depend on human intervention and works independently.

Ultrasonic 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, grasshoppers etc in order to protect the crops from these potentially harmful pests. The idea was requested by Mr. Cia Brisat.

Monday, June 29, 2015

Homemade Mosquito Killer Circuit

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. The idea was requested by Mr. Ram.

Saturday, June 27, 2015

Solar Drip Irrigation System for Indoor Gardens

The post explains a water level controller circuit which can be used for implementing an unmanned continuous drip irrigation to a home based garden. The idea was requested by Mr. Sandipan.

Thursday, June 25, 2015

220V Transformerless Constant Current LED Driver Circuit using a single IC

The MBI6001 series of ICs are designed to work with mains AC inputs and convert it into a lower voltage DC output which may be suitably used for driving a group of series connected LEDs.

Wednesday, June 24, 2015

CREE XM-L T6 LED Driver Circuit

This article explains how to illuminate a Cree XM-L T6 LED using a current controlled driver circuit while the supply input is from a battery, or in case a mains SMPS is intended as the driver unit. The idea was requested by Mr. Jaco.

Monday, June 22, 2015

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 valve sets to the indicator circuit at the distant location. The idea was requested by Mr. Andreas.

Friday, June 19, 2015

2 Pin Bi-Color LED Flasher Circuit



This transformerless mains power supply circuit will allow flashing of a Bi-color 100 LED string, in an alternately switching red, green effect.

Thursday, June 18, 2015

How Mosquito Traps Work

Mosquito and other forms of fly trap mechanisms work by making use of luring techniques for attracting the insects, which involve carbon dioxide gas, body odor simulators and ultraviolet lights. These traps become very useful in areas which may be highly infested with mosquitoes, however due to its high costs such traps are not very commonly used everywhere.

Tuesday, June 16, 2015

Dog Barking Preventer Circuit

The discussed circuit is designed to discourage dogs from barking in the selected zone by the generation of a synchronized ultrasonic sound waves in response to a few initial barking of a particular dog.
Readers are advised to proceed with the construction of the presented circuits only after understanding the concepts from the core. Not adhering to this can lead to failures and frustrations.
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