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A collector modulator is a type of amplitude modulation (AM) used in RF (radio frequency) transmitters, where the modulation of the carrier signal occurs in the collector circuit of a transistor. The input audio signal varies the base current, which in turn controls the collector current and voltage, resulting in variations of the output RF signal's amplitude. This modulation technique allows for efficient transmission of audio signals over radio waves, as the carrier's amplitude reflects the changes in the input signal. The collector modulator is favored for its simplicity and effectiveness in generating modulated signals.
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What is collector modulation?
Collector modulation is the amplitude modulation in which modulator varies the collector voltage of a transistor.
What is the position of operating point of class c amplifier used in collector modulator?
In a Class C amplifier used as a collector modulator, the operating point is set below the cutoff region, typically at around 10-20% of the maximum input signal swing. This biasing allows the transistor to conduct for less than 180 degrees of the input signal cycle, resulting in high efficiency and generating a distorted output that can be further processed for modulation. The collector modulator configuration effectively uses this operation to amplify high-frequency signals while maintaining the desired modulation characteristics.
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What is collector modulation?
Collector modulation is the amplitude modulation in which modulator varies the collector voltage of a transistor.
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What is working principle?
A working principle is a regulation or rule that is used so that work can be done. This is a general phrase that can be used in any circumstance from the working principle of a motor, to the working principle of a solar cells.
Why amplitude modulation is called as collector modulation?
amplitude modulation using collector modulator gives:More symmetrical envelope• Higher power efficiency• Higher output power• Need higher amplitude modulatingsignal
What does principle?
A principle is a way of working or ethical standards.
What is the position of operating point of class c amplifier used in collector modulator?
In a Class C amplifier used as a collector modulator, the operating point is set below the cutoff region, typically at around 10-20% of the maximum input signal swing. This biasing allows the transistor to conduct for less than 180 degrees of the input signal cycle, resulting in high efficiency and generating a distorted output that can be further processed for modulation. The collector modulator configuration effectively uses this operation to amplify high-frequency signals while maintaining the desired modulation characteristics.
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You need to describe symptoms. Check oscillator frequency and power supply.
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