Jun 24, 2025 · Given a zener of 4.7V with a knee current of 1mA and a maximum power dissipation of 1W . Design a regulated power supply to deliver a load current ranging from 0 to …

Apr 26, 2025 · No. A zener diode alone will not work. If the voltage exceeds the zener voltage, the zener diode will die a quick death followed by the gauge. You need to put a resistor ahead of …

Your 1N4733A zener diode is 5.1V (plus or minus 5%) only when its current is the "test " current of 49mA and the zener diode is cooled somehow to 25 degrees C. Less current reduces its …

May 26, 2024 · If you don't want to edit the standard.dio file you can get a reasonable 3V zener model thus :- Place a diode symbol on your schematic. Click 'Pick new diode'. Click on an …

May 23, 2025 · Most Zener diodes are avalanche diodes (those above 6V) and have a negative temperature coefficient. Those below 6V are real zener diodes and have a positive …

Aug 30, 2024 · Design a + 10V regulated supply for load currents from 0 to 100 mA using a zener and an emitter follower; the input voltage is +20 to +25 V. Allow at least 10 mA zener current …

Sep 4, 2014 · Zener diodes must be protected by an external resistor in all cases or the user risks a blown zener diode. I disagree with Wayneh to a small degree, the zener voltage varies with …

Jan 29, 2024 · A zener diode isn't likely to work. What you want is a TVS diode; essentially zener designed for a high surge current. They usually short when they fail, which is what if you have …

Feb 5, 2024 · A zener diode voltage regulator is the very least efficient scheme possible, in addition to being a poor regulator . A 12 volt zener can work quite well as the reference source …

Aug 17, 2013 · Only in this connection NPN transistor work as a Zener diode. But the Zener voltage is not well defined. This voltage will be in range between 6V up to 9V. Depending on …