Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I recently sold a Van Alstine Ultravalve Tube Amp to a buyer in a different state. I purchased it new in 2015 and took good care of it and used it pretty lightly. Before listing it I put in new EL34 tubes and a new GZ34 rectifier. I biased it and put it on my oscilloscope and it measured...
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