The 500mw series of zener diodes are available from about 24 up to about 100 volts and typically have the same sequence of values as used for the 5 e24 resistor series with the individual voltage ratings for these small but very useful diodes are given in the table below. Result will be displayed. Zener Diodes A Series Resistor Behind A Reverse Biased Zener Diode What Happens When Load Current Changes In Zener Diode Quora This calculator will determine the various design parameters for a zener diode resistor voltage regulator. How to calculate zener series resistor . Izzener current which can found using formulawattvoltage. Where vs input voltage. This article looks into the theory behind the algorithms which might prove useful to gcse students revising for exams. A zener diode can be used to generate a fixed voltage by passing a limited curre...