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3 High Power SG3525 Pure Sinewave Inverter Circuits

The post explains a 3 powerful yet simple sine wave 12V inverter circuits using a single IC SG 3525. The first circuit is equipped with a low battery detection and cut off feature, and an automatic output voltage regulation feature. This circuit was requested by one of the interested readers of this blog. Let’s learn … Read more3 High Power SG3525 Pure Sinewave Inverter Circuits

How to Design an Uninterruptible Power Supply (UPS) Circuit

In this brief tutorial we learn how to design a customized UPS circuit at home using ordinary components such as a few NAND ICs and a some relays. What is an UPS UPS stands for uninterruptible power supply, these units are designed with an intention to provide power to the connected load without slightest bit … Read moreHow to Design an Uninterruptible Power Supply (UPS) Circuit

Make this Electric Scooter/Rickshaw Circuit

The article presents a simple electric scooter circuit design which can be also modified to make an electric auto-rickshaw. The idea was requested by Mr. Steve. The Circuit  Request I was lucky enough to find your blog, really amazing stuff that you’ve managed to design. I’m looking for a DC to DC Step Up and … Read moreMake this Electric Scooter/Rickshaw Circuit

Emergency Incubator Heater Circuit with Battery Charger

The post discusses a 12V power supply with battery charger circuit which can be implemented as an uninterruptible emergency heating system for incubator chambers. The idea was requested by Mr. Arya. Technical Specifications I’ve read all your good article, but can you help me to design an Linear PSU that provide 12 vdc 5A output … Read moreEmergency Incubator Heater Circuit with Battery Charger

Detecting Static Human with PIR

The post explains a method which can be probably used for enhancing a passive infrared sensor ability to detect even a static or stationery human presence. This feature is normally not possible with the conventional PIR sensors. How PIR Detect Human Presence I have already discussed many PIR based motion detector applications in this website, … Read moreDetecting Static Human with PIR

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