World's First tDCS Kit. Trans-Cranial Direct Current Stimulation.

The digital design engineer's source: a "EE products company serving students, universities, and OEM's worldwide with technology-based educational design tools."

Disassembling Apple's diminutive inch-cube iPhone charger reveals a technologically advanced flyback switching power supply that goes beyond the typical charger. It simply takes AC input (anything between 100 and 240 volts) and produce 5 watts of smooth 5 volt power, but the circuit to do this is surprisingly complex and innovative.

IC for battery/wall power change-over/switch-over

battery switch over using LT4412 IC

Article announcing the MK802 AllWinner ARM USB stick computer. Currently selling for $74.

Relatively cheap camera module for the Gumstix platform.

using a transistor to fully saturate a mosfet

Apple iPhone charger teardown: quality in a tiny expensive package
Disassembling Apple's diminutive inch-cube iPhone charger reveals a technologically advanced flyback switching power supply that goes beyond the typical charger. It simply takes AC input (anything between 100 and 240 volts) and produce 5 watts of smooth 5 volt power, but the circuit to do this is surprisingly complex and innovative.

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