Monday, August 18, 2014
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Class C Power Amplifier
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If the amplifier class B need two transistors to work properly, then there are the so-called class C amplifier that only need 1 transistor. There are few applications that really only requires a positive phase only. An example is the pilot frequency detector and amplifier, RF tuner amplifier circuit and so forth.
Class C transistor amplifier active work only on the positive phase only, even if the need is quite narrow only the peaks are strengthened. Time signal can replica by series resonance of L and C. Typical of the series class C amplifier is like in the following series.
Class C Power Amplifier
If the amplifier class B need two transistors to work properly, then there are the so-called class C amplifier that only need 1 transistor. There are few applications that really only requires a positive phase only. An example is the pilot frequency detector and amplifier, RF tuner amplifier circuit and so forth.
Class C transistor amplifier active work only on the positive phase only, even if the need is quite narrow only the peaks are strengthened. Time signal can replica by series resonance of L and C. Typical of the series class C amplifier is like in the following series.
| Basic Schematic Power Amplifier Class C |
The circuit is also not necessary created bias, because the transistor was deliberately made to work the saturation region. Series L C in the circuit will resonate and contributed important in re-replicate input signal into an output signal with the same frequency. This series if given the bait behind can be a series of RF oscillator is often used the transmitter. Class C amplifier have high efficiency even up to 100%, but fidelitas level is more low. But the actual High fidelitas not be purpose of this type of amplifier.
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