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Q. Write notes on clamping ?
When a signal drives an open-ended capacitor the average voltage level on the output terminal of the capacitor is determined by the initial charge on that terminal and may therefore be quite unpredictable. Thus it is necessary to connect the output to ground or some other reference voltage via a large resistor. This action drains any excess charge and results in an average or DC output voltage of zero.
A simple alternative method of establishing a DC reference for the output voltage is by using a diode clamp as shown in figure . By conducting whenever the voltage at the output terminal of the capacitor goes negative, this circuit builds up an average charge on the terminal that is sufficient to prevent the output from ever going negative. Positive charge on this terminal is effectively trapped.
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A selection form an application's menu, or a command typed in by the user, like at a DOS prompt or at the Run dialog box in Windows.
why Vout begins to decrease ...
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Q. A three-phase transformer bank consisting of three 10-kVA, 2300:230-V, 60-Hz, single-phase transformers connected in Y- is used to step down the voltage. The loads are connecte
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