Vasile Gorcea has an electronic background and he is n Wavelength Dispersion X-Ray Spectrometry Tech. with EDAX, an analytical X-Ray company located in NJ.
Speaker Protection and Muting with an Optical Coupler
Build this optically-coupled speaker protection circuit when using homebrew or vintage amplifiers.
Selected questions from past Q&A columns.
Need to brush up on your electronics principles? These multi-part series may be just what you need!