Final answer:
To design a system that switches on an LED when the frequency of two input sources is compared, you can use a class A amplifier circuit. Here is a step-by-step design process.
Step-by-step explanation:
To design a system that switches on an LED when the frequency of two input sources is compared, you can use a class A amplifier circuit. A class A amplifier is a simple, low-power amplifier that is commonly used in audio applications. It operates in a way that allows for effective comparison of input frequencies.
Here is a step-by-step design process:
- Start by using two input sources, each with a different frequency, and connect them to a mixer.
- The mixer merges the signals from the two input sources, and the output is connected to a class A amplifier.
- The output of the class A amplifier is connected to a comparator circuit.
- The comparator circuit compares the frequency of the two input sources.
- If the frequencies are different, the comparator signals the LED to switch on.
This design ensures that the LED switches on only when the frequencies of the two input sources are compared.