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USB Device Charger
Posted on Thursday, April 8, 2010   •   Category: USB Circuts

USB Device Charger

With this tiny thing you can charge almost all devices that are charged via USB, like iPods or mobile phones, with only two AA-Cells.

     USB Switch
     DIY USB to RS232 Adapter
     USB - LCD with PIC Microcontroller & FT232
     USB Battery Pack
     USB LED Load
     USB - Relay Board
     USB 8bit Interface Board
     USB to RS232 Converter
     USB IO Board PIC18F2455 / PIC18F2550
     MAX3420 – Maxim USB Peripheral Controller
USB Device Charger

 

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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