An audio amplifier was once a fairly simple analogue device, but in recent decades a typical home entertainment amplifier will have expanded to include many digital functions. When these break ...

It used to be a rite of passage to be able to do the math necessary to design various bipolar transistor amplifier ...

Almost exactly a decade ago, I picked my way among the charred ruins of downtown Kaduna city in northern Nigeria. Days of rioting and violence between the majority Muslims and minority Christians had ...

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