Construct the circuit symbol of Zener diode.

The circuit symbol for a Zener diode looks like a regular diode with a "Z" inside it. Here's how you can describe it:

Draw a rectangle, which represents the diode.

Inside the rectangle, draw a diagonal line from the top-left corner to the bottom-right corner. This line should be oriented at an angle, like a forward-biased diode symbol.

Now, draw a "Z" letter inside the rectangle, with the top of the "Z" connected to the diagonal line you drew in step 2. The "Z" should be oriented horizontally.

This "Z" inside the diode symbol represents the breakdown voltage of the Zener diode, which is a crucial parameter for Zener diodes as they are designed to operate in the reverse-biased breakdown region.

Remember that when you see this symbol in a circuit diagram, it indicates the presence of a Zener diode, which is often used for voltage regulation purposes.