All semiconductor are sensitive to temperature. Some vary greatly some not so great. Zeners are not one of class as greatly. Zeners do change voltage slightly as temperature vary like all active devices. But to use one as a temperature sensor is bad idea.
zener resistance of a zener diode is the resistance of the zener diode but which is the resistance of a diode
positve
Applications of Zener diode: a.)It Regulators. b.)It Controlled Comparators. c.)It Limiters. d.)It is Part in Power Supplies.
If the zener diode is in zener breakdown the voltage across the zener diode remains constant regardless of current (for the ideal zener diode). Real zener diodes have parasitic resistance that causes the voltage across the zener diode to increase slightly with increased current, but due to temperature dependant variations in this parasitic resistance as well as temperature dependant variations in the zener breakdown voltage, this change in voltage in real zener diodes cannot be described by a simple linear factor.
negative tempareture It depends on the reverse voltage. Up to about 5.6 volts, the zener has a negative temperature coefficient. Beyond 5.6 volts it begins to show a positive temperature coefficient.
Zener diode is heavily doped pn junction diode.
A thermally compensated Zener diode reference is a voltage reference circuit designed to maintain a stable output voltage over a range of temperatures. It typically incorporates a Zener diode along with additional components, such as temperature-sensitive resistors or diodes, to counteract the effects of temperature variations on the Zener voltage. This compensation minimizes drift, ensuring that the reference voltage remains consistent, which is crucial in precision applications. By improving temperature stability, these circuits enhance the performance of electronic systems that rely on accurate voltage references.
zener diode :zener diode operates under reverse bias voltageideal diode :ideal diode operates under forward bias voltage
A zener diode cannot be used as switch.
Different applications of diode include:Rectification of voltageswitching circuitsclamping applicationsvoltage reference (zener Diode)phase lock loop/FFLinfrared applicationssignal amplifierssensorshigh frequency micro-wave oscillators.
Dr. Clarence Melvin Zener of Southern Illinois University invented the zener diode.
zener diode is a revers bias diode which used for voltage regulation.