Question

Set your own spec for the capacitor's voltage ripples (say 5%, or any other figure that you choose). Design the resistor R (that feeds I2​ into the Zener) and the capacitor C. In your ADS verification don't show the transformer - just emulate it by creating a suitable AC secondary voltage. Test your design and measure the following performance indicators:

- The minimum value that I2​(t) reaches.
- The ptp ripples of the supply V.
- The ptp ripples of the capacitor's voltage.
- The resulting line regulation.
- The resulting load regulation.
Measurement of some of the above indicators may require that you set the circuit in certain special settings.
For example, disconnect IL when you measure the line regulation.

Answer 1

The power supply design in question involves choosing appropriate resistor and capacitor values to regulate voltage with a Zener diode, ensuring minimum current dips, and acceptable ripple voltages while maintaining line and load regulation.

Step-by-step explanation:

When designing a power supply with a Zener diode for voltage regulation, factors such as the ripple voltage, line regulation, and load regulation need to be considered. The power supply's performance is measured by the minimum value that the current I2(t) reaches, the peak-to-peak (ptp ripples) of the supply voltage, and the capacitor's voltage ripples. To ensure that the ripples are within the set specification, a capacitor C and resistor R must be chosen to filter the output voltage effectively. The impedance Z plays a crucial role in determining the circuit's behavior as it affects the peak current I and the voltage across the components, including the Zener diode (Vc).