Denis Healey found him ‘the sort of insubordinate intellectual I find most agreeable’ but he dealt brusquely with Margaret Thatcher Sir Kit McMahon, who has died aged 97, was an Australian ...

Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States ...

The laser is connected to the servo assembly and is engaged and powered by an Arduino pin via an NPN transistor. He also incorporated a potentiometer to adjust the servo calibration point.

The most recent installment of [Dino Segovis’] Hack a Week covers the construction of a simple NPN transistor audio preamp.Some time ago, he built a small audio amplifier using an LM386 which ...