Batteries often serve as the main energy source for portable electronic devices. Although they depend on batteries, portable consumer electronic products, such as GPS devices and multi-media players, often consume energy directly from an ac-dc wall adapter or accessory power adapter (or “Auto Adapter”) when the battery is low or the device is in a […]
This project shows you how to build a simple constant current sink which can be used to simulate a DC dummy load. It can help you test cheap DC-DC converters to see if they really put out the amount of current as advertised. The circuit is quite simple, a voltage follower or buffer using opamp.
The aim of the project is to build a simple NPN and PNP transistors tester and to identify their pin layouts, i.e. EBC, ECB. When you place transistor in correct position, the LED will light up. This circuit requires few parts and it easy to obtain many of the required parts from your local store.
This circuit helps you to build simple Exhaust Fan Controller in your kitchen using temperature IC LM35 and LED driver LM3914. It will monitor the ambient temperature and turn on Exhaust fan when the temperature above the preset temperature levels. User can switch three preset temperature levels using a jumper/slide switch (JP1), which determines the […]
This guide helps you to learn and understanding everything you need to know about the Raspberry Pi computer, its background, purpose, system specs, the software it runs and the amazing things it is capable of. FREE DOWNLOAD Unofficial Raspberry Pi Manual (limited)
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