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PC related circuit diagrams
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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
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
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
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]
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]
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
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
April 28, 2010
An external 5 volt power supply is used to provide high logic levels to the input pins when the switches are open. Three 1.5 volt batteries in series can be used to obtain 4.5 volts... [more]
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