Voltage clamping circuit with high power zener diode?
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 …
LTSpice zener diode 3V model - All About Circuits
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 …
Identifying small, glass diodes? - All About Circuits
Jun 24, 2024 · Looking for advice on how to correctly identify those tiny, glass, red/black diodes. Like these: I have a couple small projects where I need a zener, I have several suspects but …
Zener diode maximum reverse current | All About Circuits
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 …
protecting a p channel mosfet gate with a zener. - All About Circuits
Oct 2, 2023 · The cathode of the zener on the gate and the annode on the source? Since the P-MOSFET is reverse polarity from an N-MOSFET with a negative Vgs to turn it on, you put the …
Zener knee current?? - All About Circuits
Jul 12, 2011 · Izk is the knee current of the zener diode. When the current flowing into the zener is larger than the specified knee current, it will permit significant current flow in the reverse …
simulate a noise source LTspice - All About Circuits
Dec 28, 2024 · Trying too different circuits producing noise, I get 0 Volts output running the circuits in LTspice. One circuit obtains noise from a Zener diode, and the other one from the …
What does "Back to Back Diodes" actually mean - All About Circuits
Jun 21, 2022 · Back to back is really incorrect, they are in parallel but inverse parallel. Actual "back-to-back" only works with breakdown diodes that will conduct in both directions, such as …
voltage drop in zener diode - All About Circuits
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 …
Zener diodes in parallel - All About Circuits
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 …