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Ft 5GHz transistor
On Mon, 28 Nov 2011, Lemon Tree wrote:
How difficult are transistor with an Ft of 5GHz to use? There are some really cheap ones around these days like the 2sc3356 for example. I'd like to some to make a regenerative receiver but I worry that even after careful PCB layout I would still have problems. Anyway I am starting a new website where I intend to present many useful circuits. It is located at http://circuitprofile.scienceontheweb.net At the moment there is only XOR circuit, but that XOR circuit should be helpful for anyone making a huff and puff stabilized oscillator circuit. But why? Cheap really high frequency transistors are great, when you need very high frequency characteristics. But there are also plenty of cheap transistors that don't go so high in frequency that are more than good enough at lower frequencies. Those "lesser" transistors have to be more available than the really high frequency transistors. Take note that a lot of "popular" transistors are that way because they've been specified in construction articles, which in turn causes the parts places to carry them, which then also means others specify them in construction articles. Michael VE2BVW |
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