Zener Diode Schematic Symbol

Zener diode is nothing but a single diode connected in a reverse bias mode and zener diode can be connected in reverse bias positive in a circuit as shown as picture we can connect it for different applications.

Zener diode schematic symbol. For convenience it is used normally. Allows current flow in one direction but also can flow in the reverse direction when above breakdown voltage. The term rectifier is used for power devices i 1 a. This is the schematic symbol for a diode.

It is a type of diode that operates as a tunnel diode in forward bias zener diode in reverse bias. A zener diode is a special type of diode designed to reliably allow current to flow backwards when a certain set reverse voltage known as the zener voltage is reached. Zener diode also called stabilizer or stabilistor. Think of the anode side of the symbol as an arrow that indicates the direction of conventional current flow from positive to negative.

Some zener diodes have a sharp highly doped p n junction with a low zener voltage in which case the reverse conduction. Semiconductor diode schematic symbol. In frequency modulation fm systems pulse selection systems voltage stabilizers and as the component which secures and protects circuits from power surges. Arrows indicate the direction of current flow.

It has two electrodes called anode or plate and cathode it uses the rectifying properties of the union between type p and n materials of a semiconductor. The anode is on the left and the cathode is on the right. It is a member of the semiconductor diodes family. The schematic symbol for a zener diode is shown above it is very similar to that of a regular diode but with bent edges on the bar.

The zener still conducts electricity in the forward direction like any other diode but also conducts in the reverse direction if the voltage applied is reversed and larger than the zener breakdown voltage. Semiconductor diodes are symbolized in schematic diagrams such as the figure below. Variable capacitance diode. Zener diodes are manufactured with a great variety of zener voltages and some are even variable.

The diode is a semiconductor device that allows the current to flow in one direction only. The circuit symbol of zener diode is as shown in the figure. Here are two useful tricks for remembering which side of the symbol is the anode and which is the cathode. But its tunneling effect zener breakdown voltages are much reduced.

Varactor varicap diode. Zener diode v i characteristics. The term diode is customarily reserved for small signal devices i 1 a. It is often applied in limiter systems e g.

The basic diagram of zener diode as voltage regulator is given below. It is used in rectification of a small voltage signal 0 1 to 0 6v. As we know if the voltage across the diode exceeds a certain value it would draw excessive current from the supply. The output across the diode will be constant.

Zener diode can work as a voltage regulator if it is introduced in a circuit.