Jon Watkins

Demystifying Op Amp Power Supplies: Split, Single & Virtual Grounds

Alan Wolke has made a fantastic video on the basics of op amp power supplies. He particularly explains how and why split power supplies came to be used, with a neat experimental setup that beautifully demonstrates how it works. Negative power supplies are always a difficult and arcane concept to get your head around. This

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Cog Drawing

Hello World!

10 PRINT “Hello World!” 20 GOTO 10 …a little programming joke there. Back in the mists of time when computers plugged into your TV and ran BASIC (the inspiration for the Raspberry Pi) we used to go into shops and type that program into the computers, run it and walk away. Of course, in those

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