How to choose the correct Zener diode voltage?
The next important part is to select the Zener diode value. The below points will help you in selecting the right value and part number for the Zener diode. 1. First, choose the Zener diode voltage. It is the voltage value where the Zener diode will act as a close circuit and protect the load from overvoltage.
What should the Zener voltage be for PSpice?
For the above example in Pspice, the Zener voltage is 6.8V. There will be some situations where the targeted Zener diode voltage is not available. In such cases, a close value of the Zener diode can be chosen. For example, for overvoltage protection up to 7V, a 6.8V Zener diode is a close value.
Which is the best diode for over voltage protection?
A very common and cost-effective solution is to use a Zener Diode Over Voltage Protection Circuit. Zener Diodes – Basics Zener diodes are mostly the first choice to protect the circuit from an overvoltage condition. A Zener diode follows the same principle of the diode, which is blocking the flow of current in the reverse direction.
How to use TVS diodes for transient voltage suppresison?
The primary way to protect a circuit from overvoltage is to place these TVS devices in parallel with the circuit. There are many types of TVS device that can be used for Transient Voltage Suppression namely Metal Oxide Varistor, TVS Diode, Zener Diode or a Bypass Capacitor.
How much voltage can I get from 10 diodes?
So for example getting 5V from a 12V source using 10 diodes in series would be bad, and the voltage could range from as much as 7V to as little as 2V, depending on the current draw. The 7805 has a minimum voltage of 7V to output 5V at 1 amp, so as long as you can guarantee this 7V you should be okay.
What kind of diode is used in over voltage circuit?
The Zener diode used in the above circuit is a 5.1V Zener diode. It will work fine during an over voltage situation. If the voltage is more than 5.1V, the Zener will pass the current and control the voltage up to 5.1V. But less than 5.1V, the Zener will act like a normal diode and block
What is the Zener voltage of a load circuit?
The circuit below has a zener voltage of 5.1V. Therefore, the 12-volt power supply drops 5.1V and the voltage across the zener remains constant at this voltage. This 5.1 zener voltage is then placed in parallel to a load device, which it powers. This is a voltage regulator circuit.
Can a microcontroller work with a 5.1v voltage?
Therefore, more than 5V could damage the microcontroller. The Zener diode used in the above circuit is a 5.1V Zener diode. It will work fine during an over voltage situation. If the voltage is more than 5.1V, the Zener will pass the current and control the voltage up to 5.1V.
What should the Zener voltage be in PSpice?
The Zener voltage is 6.8V in Pspice, for the above example. There will be some cases where there is no usable targeted Zener diode voltage. In such instances, it is possible to choose a near value of the Zener diode. For example, for overvoltage security up to 7V, a near value is a 6.8V Zener diode.