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| articles:triz_application [2019/02/28 11:46] – [The Quality "Whac-A-Mole"] rrandall | articles:triz_application [2019/02/28 11:46] – [CI and Optimization] rrandall |
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| Through understanding and adjusting their approach to addressing process issues, by first determining whether the issue is a "Common Cause" or "Special Cause" variation, actual process improvements can be realized | Through understanding and adjusting their approach to addressing process issues, by first determining whether the issue is a "Common Cause" or "Special Cause" variation, actual process improvements can be realized |
| ===== CI and Optimization ===== | ===== CI and Optimization ===== |
| When radio first appeared, the signal had to be manually adjusted for optimal reception. During the mid-twentieth century, Automatic Frequency Control (AFC), also called Automatic Fine Tuning (AFT), was introduced allowing the radio circuitry to automatically keep a resonant circuit tuned to the frequency of an incoming radio signal. It was primarily used in radio receivers to keep the receiver tuned to the frequency of the desired station. | When radios first appeared, the signal had to be manually adjusted for optimal reception. During the mid-twentieth century, Automatic Frequency Control (AFC), also called Automatic Fine Tuning (AFT), was introduced allowing the radio circuitry to automatically keep a resonant circuit tuned to the frequency of an incoming radio signal. It was primarily used in radio receivers to keep the receiver tuned to the frequency of the desired station. |
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| In radio communication, AFC is needed because, after the bandpass frequency of a receiver is tuned to the frequency of a transmitter, the two frequencies may drift apart, interrupting the reception. This can be caused by a poorly controlled transmitter frequency, but the most common cause is drift of the center bandpass frequency of the receiver, due to thermal or mechanical drift in the values of the electronic components. | In radio communication, AFC is needed because, after the bandpass frequency of a receiver is tuned to the frequency of a transmitter, the two frequencies may drift apart, interrupting the reception. This can be caused by a poorly controlled transmitter frequency, but the most common cause is drift of the center bandpass frequency of the receiver, due to thermal or mechanical drift in the values of the electronic components. |
