Forget bulky flashlights. Modern white LEDs are incredibly bright and efficient. They can light up the night with just 3V and a tiny amount of current around 20 mA. The following diagram shows a basic LED flashlight circuit. What is a LED Flashlight Circuit (Torch Circuit): A LED flashlight circuit also known as a torch […]
Simple Automatic Day Night Switch Circuit
Saving electricity is important especially in cities where there is not enough to go around anymore. This article shows you how to build a simple automatic light switch that turns things on, and off depending on how light or dark it is outside. This can help you save money on your electric bill. What is […]
Simple Solar Inverter Circuit with Charger
This post shows you how to build a circuit that can take power from a solar panel and turn it into household electricity AC. It has two parts: a charger and an inverter. The charger uses an 18V solar panel to charge a 12V battery. The inverter uses the battery power to create household current […]
Simple Inverter Circuit using Two 2N3055 Transistors
In this post we will discuss how to build a very simple cross coupled inverter circuit using just a couple of 2N3055 transistors. This simple inverter is capable of generating 220V 100 W which can be used to power small home appliances using a 12V battery. How the Circuit Works: Parts List: Category Component Quantity […]
High Current Solar Battery Charger Circuit for 12V, 24V, 48V Batteries
This post shows you how to build a solar panel charger that can work with different types of batteries. It can charge 12V, 24V and even 48V batteries by changing a small part zener diode on the circuit. This makes it a very versatile charger for many uses. What is a High Current Solar Battery […]
Simple IC SG3525 Inverter Circuit using IRFZ44 MOSFETs
This post shows you how to build a converter that changes car battery power 12V DC into household current 220V AC using a chip called the SG3525 and special transistors called MOSFETs. It uses a special method called Pulse Width Modulation PWM to make the AC current. This converter can be used to power regular […]