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You are here: Home / Archives for Health Related

Electronic Ballast Circuit for UV Germicidal Lamps

Last Updated on January 21, 2021 by Swagatam Leave a Comment

In this post we discuss the construction of a DC UV germicidal lamp ballast circuit which can be used for driving any standard 20 watt UV lamp through a 12 […]

Filed Under: Health Related, Inverter Circuits

Ultrasonic Hand Sanitizer Circuit

Last Updated on October 4, 2020 by Swagatam 3 Comments

The ultrasonic hand sanitizer circuit detects the presence of human hand through reflected ultrasonic waves, and triggers a relay solenoid pump momentarily for dispensing the sanitizing liquid on the hands […]



Filed Under: Health Related

Face Mask with UVC Disinfected Fresh Air

Last Updated on June 18, 2020 by Swagatam Leave a Comment

Face masks have so far proved to be the most effective first line of defense against all contagious epidemics and pandemics. However, the biggest discomfort with face masks is the […]

Filed Under: Health Related

Digital Thermometer Circuit – Uses a Solar Cell for Power

Last Updated on June 9, 2020 by Swagatam Leave a Comment

The articles explains a digital thermometer circuit project that works without a battery. Instead of a battery the circuit utilizes a small solar cell and operates by deriving power from […]

Filed Under: Health Related, Meters and Testers

Bluetooth Stethoscope Circuit

Last Updated on May 25, 2020 by Swagatam 6 Comments

In situations as critical as a COVID-19 pandemic, a doctor is the one personnel who is the most susceptible to getting infected by the virus from a patient. Therefore, doctors […]

Filed Under: Health Related

How Contactless Infrared Thermometers Work – How to Make One

Last Updated on May 19, 2020 by Swagatam 4 Comments

In this post we will learn the basic working concept of thermal scanners or contactless IR thermometers, and also learn how to make a practical DIY prototype of the unit […]

Filed Under: Infrared (IR), Health Related, PIR (Passive Infrared), Sensors and Detectors



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