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The circuit was designed to provide an adjustment with a power supply that is symmetrically designed while providing a voltage range of 1.25V to 30V at 1A current.   ... Read more »
Category: Power | Views: 3184

This is a 5V to 12V DC-DC step-up (boost) converter circuitry that is especially ideal for the USB powered applications. First of all a USB port has two current supply modes. Before detecting the connected device, it supplies maximum 100mA to the load. After recognizing the device, it increases the output current up to 500mA. In this circuit, controller (LT1618) also provides two input current modes. 100mA and 500mA input modes can be selected by the user.  ... Read more »
Category: Power | Views: 2046

I didn't realize till the other day that I have never shown a circuit for a standard power supply. Shown below is a supply that will use any of the LM78XX series of voltage regulators  ... Read more »
Category: Power | Views: 918

This is an electronic fuse that protects the load against short circuit  ... Read more »
Category: Power | Views: 1616


This project details a small and simple, but very powerful USB charger for your mp3 player, camera, cell phone, and any other gadget you can plug into a USB port to charge. ... Read more »

Category: Power | Views: 944

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