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USB Battery Pack
Posted on Friday, June 20, 2014   •   Category: USB Circuts

USB Battery Pack

This project is able to power a USB device using two standard AA batteries and an electronics circuit. The circuit is based on LT1073 DC/DC converter to convert the 3V to 5V needed by USB. In that way it can power the USB device on the go.

     USB - Relay Board
     USB - LCD with PIC Microcontroller & FT232
     USB LED Load
     RS232 Serial to USB Converter
     USB Switch
     MAX3420 – Maxim USB Peripheral Controller
     USB to RS232 Adapter with FT232
     USB-PC 8-CH Power Switch
     USB Battery Pack
     USB IO Board PIC18F2455 / PIC18F2550
USB Battery Pack

 

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]



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