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 the zener …
Protecting a BJT PNP from emitter-base reverse breakdown
Dec 31, 2024 · A diode from base to emitter will protect against excess reverse bias. The diode arrow direction would be opposite the direction of the base-emitter junction arrow.
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 with no …
Transistor as a Zener Diode - All About Circuits
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 the type 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 arbitrary low …
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 voltage and …
Voltage Reference vs Power supply voltage help - All About Circuits
Feb 15, 2025 · The Zener diode as a reference is like a seesaw at the balance point where voltage and current are in a stable configuration. If you try to draw current away from the Zener diode you will …
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 reverse-biased …
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 in a simple …
zener diode current limitations in operation - All About Circuits
Oct 30, 2024 · Hello, Genarally we use zener diode in reverved biased operation. We need to make sure the current is within the spec in order to get In my simulation ,The 1N750 get 1.4mA currect when its …