First on the Net diagram of a USB Hub for your computer, this assembly is being tested this page will be updated during the tests and complete assurance of that Hub. The cost is very low since you have to get only USB connectors and quartz 6 MHz (RadioSpares) for example. See the Texas site for the availability of other components.
USB Hub TUSB2046 Circuit
Source: lpmi.uhp-nancy.fr/realisation/USB/usbhub.html USB Hub Circuit alternative link:
USB Hub Circuit
Password: 320volt.com
Published: 2008/08/03 Tags: analog circuits projects
ZEN Class A Amplifier Circuit IRFP140 IRFP9240
ZEN amp Nelson Pass had 94 published an article where he described the realization of ZEN amplifier, a MOSFET amp class A 10-watt extremely simple or rather simple in the extreme.The reading of the article and studying the pattern left speechless. A single MOSFET (IRFP140) to amplify the signal and a second (IRFP9240) as current source (2 amps).
ZEN Amplifier Circuit