Hello, my first post here. Plexi plus v1 on my workbench, actually I found building docs here in forum as only v2 available in PDF. Still have some issue with bias – using 50k trimpots I am not able to go lower than some 8,5v at the Drain. I do not see any changes in values of components, only changed 1N5817 diode to 1N4001 following v1 BOM. Is there something I am missing?
You were both right, I found some original Fairchild from some previous project and the problem is solved. Unfortunately only 4 pcs. The fake ones come from a local Czech dealer where I have been buying for years without problems (J201 for the first and last time).
Many thanks !!
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