Misc Stuff
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Scan day: 08 February 2014 UTC
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Description: A collection of handmade microphones and other electronic projects.
Since I do a fair amount of designing and repairing of tube based amplifiers,I decided to build a simple tube tester.It tests output tubes such as 6L6,6550,EL84,EL34,and 6V6.The circuit is very simple. A transformer powers the filament ,while the plate voltage comes from the rectified and filtered power line.The switch in front selects the different grid voltages needed for the different tubes. I've found the tester very useful in matching output tubes for amplifiers since it shows me the actual current through the tube. The wood is redheart and the top is black acrylic.
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| Date | Creation Date: 15-oct-1998 Expiration Date: 14-oct-2016 |