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USB devices circuit diagrams

The Itsy-Bitsy USB Lamp
The Itsy-Bitsy USB Lamp
September 27, 2010

We've called it the Itsy Bitsy USB Lamp. It is such a delightfully simple idea we're wondering why no-one ever thought of it before. It started life (and continues) as a student project at Massey... [more]


circuit from:http://www.extremecircuits.net/2010/03/itsy-bitsy-usb-lamp.html

USB Fuse
USB Fuse
September 27, 2010

Life in the 21st century would be almost unbearable without some of the computer peripherals that PC users now look on as essentials - take for example the USB powered teacup warmer; this device is... [more]


circuit from:http://www.extremecircuits.net/2010/05/usb-fuse.html

USB Operated Home Appliances
USB Operated Home Appliances
September 27, 2010

When turning a computer on and off, various peripherals (such as printers, screen, scanner, etc.) often have to be turned on and off as well. By using the 5-V supply voltage from the USB interface... [more]


circuit from:http://www.extremecircuits.net/2010/05/usb-operated-home-appliances.html

USB Power Injector For External Hard Drives
USB Power Injector For External Hard Drives
September 27, 2010

In fact, the device is powered from two USB ports, since one port is incapable of supplying sufficient current. That’s done using a special USB cable that’s supplied with the drive. It has two connectors... [more]

USB Printer Share Switch Circuit Project
USB Printer Share Switch Circuit Project
September 27, 2010

This simple device allows two computers to share a single USB printer or some other USB device, such as an external flash drive, memory card reader or scanner. A rotary switch selects the PC that... [more]

USB Switch For Printers
USB Switch For Printers
September 27, 2010

This circuit switches a printer’s USB connection from a PC to a laptop. What was needed was a method of allowing a laptop to use the printer occasionally while at all other times the printer... [more]


circuit from:http://www.extremecircuits.net/2010/05/usb-switch-for-printers.html

Usb Power Socket With Indicator
Usb Power Socket With Indicator
September 27, 2010

Today, almost all computers contain logic blocks for implementing a USB port. A USB port, in practice, is capable of delivering more than 100 mA of continuous current at 5V to the peripherals that are... [more]


circuit from:http://www.extremecircuits.net/2010/05/usb-power-socket-with-indicator.html