I'm building a long tailed pair phase inverter and am wondering what the best thing to do with the second grid is. In others' designs I have seen it connected to ground via a small resistance (10k) or a large one (1Meg). Some even bypass with a capacitor.
What's better, a big or a small resistance? What benefit would bypassing give?
What's better, a big or a small resistance? What benefit would bypassing give?
It depends on the DC voltage at the first grid. When the first grid is at DC ground, the other grid is generally either grounded directly or used as a feedback point. When the first grid is at an elevated DC potential, the grids are usually connected together with a large-ish resistor (which causes them to assume the same potential), then the second grid is bypassed to ground at AC.
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