Tag Archives: Pre-Amplifier

Basic FET Amplifier

Posted on December 5, 2010 by Rend

This is The Fet Amplifier circuit. This circuit uses FET transistor. The gate of the FET must be negative with respect to the source, so a bias can be achieved in the following manner. The voltage that is across the … Continue reading →

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DC Coupled Transistor Amplifier

Posted on December 3, 2010 by Rend

This is a The Directly (DC) Coupled Amplifier circuit. This circuit is built from NPN transistor and PNP transistor. This circuit is used to amplify a DC signal. Since there is no coupling capacitor to block DC, this circuit can … Continue reading →

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Transistor Common Base Amplifier

Posted on December 3, 2010 by Rust

As far as AC is concerned, the base is connected to the ground by the C3. Therefore, both input and output are connected to the base (common base amplifier). The magnitude of the current gain is less than 1 since … Continue reading →