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Newly Updated Circuit Projects:

Automatic Bathroom/Toilet Engage Indicator Circuit

Last Updated on June 1, 2026 by Swagatam 8 Comments

IMG 1200 2

In this post I have explained a very simple automatic bathroom/Toilet Engage indicator circuit which can be installed with any relevant door bolt for implementing the actions. The idea was created and submitted by Mr. Sandipan. The Design I have one more idea that need your help. I would like to implement is at my […]

Filed Under: Indicator Circuits Tagged With: Automatic, Bathroom, Engage, Indicator, Toilet

How Thyristors (SCR) Work – Tutorial

Last Updated on May 20, 2026 by Swagatam 8 Comments

scr 2

Basically an SCR ( Silicon Controlled Rectifier) which is also known by the name Thyristor works quite like a transistor. What  SCR Stands for The device gets its name (SCR) due to its multi layered semiconductor internal structure which refers to the “silicon” word in the beginning of its name. The second part of the […]

Filed Under: Electronics Theory Tagged With: SCR, Thyristors, Tutorial, Work

Solar Insect Killer Circuit for Protecting Crops in Farms

Last Updated on September 25, 2026 by Swagatam 4 Comments

ldrcircuit

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. In one of our previous […]

Filed Under: Pets and Pests Tagged With: Crops, Farms, Insect, Killer, Protecting, Solar

Solar Insect Repellent Circuit for Protecting Crops in fields

Last Updated on September 25, 2026 by Swagatam 19 Comments

insect2Brepeller2Bcircuit

In this post I have explained 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. Technical […]

Filed Under: Pets and Pests Tagged With: Crops, fields, Insect, Protecting, Repellent, Solar

Mosquito Killer Circuit with Window Trap

Last Updated on September 25, 2026 by Swagatam 84 Comments

mosquitokillercircuit

In this post I have explained 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. Technical Specifications Please help with any working circuit diagram for Mosquito, Insect Killer using Walton […]

Filed Under: Pets and Pests Tagged With: Killer, Mosquito, Trap, Window

Solar Drip Irrigation Circuit for Indoor Gardens

Last Updated on September 3, 2020 by Swagatam 3 Comments

drip2Birrigation2Bcircuit

In this post I have explained 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. Technical Specifications I’m implementing a drip irrigation for my balcony garden. One part of it is to automatic fill water a […]

Filed Under: Solar Controller Circuits, Water Controller Tagged With: Drip, Gardens, Indoor, Irrigation, Solar

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