OK.lottotlyl said:
To calculate the value of R in an envelope detector circuit, you will need to know the desired output voltage and the input signal voltage. The formula for R is R = Vout / I, where Vout is the desired output voltage and I is the input signal voltage. You will also need to consider the type of diode used in the circuit and its forward voltage drop.
The capacitor in an envelope detector circuit serves to smooth out the output voltage by storing and releasing charge. This helps to eliminate any high-frequency noise or fluctuations in the output signal.
The value of C in an envelope detector circuit can be calculated using the formula C = I / (2πfR), where I is the input signal voltage, f is the frequency of the input signal, and R is the value of the resistor in the circuit. This formula ensures that the capacitor is able to effectively store and release charge to smooth out the output voltage.
The ideal value for R in an envelope detector circuit depends on the desired output voltage and the input signal voltage. Generally, a higher value of R will result in a larger output voltage, but it may also introduce more distortion to the signal. It is important to choose a value of R that balances the desired output voltage with minimal distortion.
The envelope detector circuit works by using a diode and a capacitor to rectify and smooth out an amplitude-modulated (AM) signal. The diode only allows the positive half of the signal to pass through, while the capacitor stores and releases charge to create a smooth output voltage. This results in an envelope of the original signal being detected, hence the name "envelope detector".