GreatScott! I am launching it on Kickfarter!

Afrotechmods Much better than Stinky-gogo

Afrotechmods hahahaha nice names

The Bright Pixel What about Fartreon?

+Bogdi Gaming and More! you've taken that too far....

I'd be surprised if they even had normal diodes back then much less zenith's. Its amazing how much farthered we are the then back then, thinking about a black and white tv, kids idk how they enjoyed cartoons and probably explains that they were always taking drugs in the world.

Hi

@@darkside5770 Desperado

really late but basically, diodes don't have a linear voltage to current curve like a resistor, and if the voltage is above its forward voltage, the current will increase dramatically if not limited. each diode is slightly different, so if more than one diode is used in parallel, one will likely end up overheating while the others do not heat up at all. I'm not sure why some devices still do that though

lol

CoolDudeClem Yes that's a very common way to make a linear regulator!

CoolDudeClem Yup! To achieve better _load regulation_, (lower the apparent output impedance) then use a transistor with a high gain, because when you use a BJT as an emitter-follower like you describe, you create effectively a feedback loop within the transistor, and higher gain is like a higher 'P' factor, so better regulation. You can use a darlington to further improve load regulation, but the disadvantage is that the "dropout voltage" will be considerably higher. If instead you use the complementary darlington pair, you will get the advantages of a low Vbe saturation voltage (which is the main culprit for dropout voltage) as well as additional gain, and better line regulation! :D I actually use this set up a lot when I cannot find a suitable regulator in my junk bin! However, if you are simply using resistors to bias the zeners instead of a proper current source, then the current through the zeners will be proportional to the input voltage, and since the zener voltage changes a bit with respect to that current, the overall line regulation will be pretty crap, but good enough for most non-critical things. You can actually use a small regulator as a voltage reference to replace the zener diodes and improve performance.

In the late 80s and early 90s I worked rebuilding alternators and starters. In the mid 80s GM started making the CS series of alternators, which used 28 V Avalanche (Zener) diodes for the rectifiers. I believe this was to protect the electronics in the ECU from voltage spikes. These alternators were rated up to 120 A @ 12 V. I actually mounted a 120 A GM alternator in place of a 60 A Ford alternator on a 1983 LTD. I modified the GM alternator to use a heavy duty Ford external regulator, and used to jump start semis with it. edit: Oops, I forgot to answer your question. As long as the Zeners are rated to handle the anticipated current and voltage, they will work fine.

nice.....

It's called... school....

I agree with you youtube is great for learning electronics 🇬🇧😎👍

How dare you speak like that to him?

hornylink Actually, all semiconductor diodes exhibit Zener behavior at high enough reverse bias voltages. Even though the carrier depletion layer at the P-N junction becomes thicker (which is also the basis of another diode device called a varicap) with reverse voltage, eventually the tiny trickle of electrons crossing the layer becomes so energetic that they knock other electrons out of their shells, creating electron-hole pairs which allow more current to flow, which creates more electron-hole pairs, etc. When a certain voltage is reached, this happens very quickly, like an avalanche (Zener diodes are also called avalanche diodes), the voltage needed to sustain the avalanche drops, and current increases without restraint unless limited by a resistance in series. This can destroy a general purpose rectifying diode, and is the reason for the reverse voltage breakdown specification on a diode. A Zener diode is one that is designed to have a lower and precisely defined breakdown voltage, and to recover normal rectifying action (ie stop current flow) at almost exactly the same voltage (rather than at a much lower voltage). And external current limiting resistors prevents destruction of the diode on the first avalanche event. Now how about a video on the varicap diode, which is used to frequency-modulate an oscillator and to keep its frequency constant?

They totally missed the chance to call them biodes.

'Zener diodes' operate on two different principles, 'avalanche breakdown' which predominates above approx. 5.6V and below 5.6V by 'quantum tunneling' which is known as the 'Zener effect' after its discoverer, Clarence Melvin Zener.

Basic serial vs parallel question. EE 101. Or EE 1 rather.

NoVaKane MultiSim Blue is a free electronics simulation software which can be downloaded from Mouser.com

IIWII9 thank you

Voltage dividers don't provide any kind of regulation. Plus, they will heat up pretty quickly.

@colinmitchell7760 Well, hold your peace then because I have about 10 days of experience 🤣.