https://electronzap.com/voltage-for-electronic-circuits/ Introduction to voltage. Examples of providing enough to get a current through resistance, and to overcome the voltage drop of forward biased light emitting diodes (LEDs) https://www.youtube.com/c/electronzap https://www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. https://www.patreon.com/electronzap https://www.instagram.com/electronzap/ #voltage #electronics #tutorial ... https://www.youtube.com/watch?v=ablklzVeoRE

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List of my videos https://www.youtube.com/c/electronzap/videos https://www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. https://www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. https://www.patreon.com/electronzap https://electronzap.com/ https://www.reddit.com/r/ElectronicsStudy/ If I wanted to light 5 series red LEDs with 12V, I can do so if I protect them with 150Ω. Unfortunately "12V" batteries, tend to have a higher than 12V almost all of the time. 13V pushes the 5 series LEDs with 150Ω current limiting resistor to it's limit of almost 20mA of current (shown in a different video. A 12V (reverse biased) zener diode with 1k resistor can be added to an NPN BJT (such as 2N3904) wired as an Emitter Follower to limit the voltage across the load to about 12V. In fact, when the supply voltage is 20V, there's enough current flowing through the zener diode get about 12.6V based on my measurement. Meaning that about 12V gets set at the Emitter, thanks to the Base-Emitter voltage drop of about 0.6V to 0.7V. #Electronics #Howto #diy ... https://www.youtube.com/watch?v=7pccub4nrdA

Voltage across LM334 set resistor. https://www.youtube.com/c/electronzap https://www.patreon.com/electronzap https://www.reddit.com/r/ElectronicsStudy/ https://www.instagram.com/electronzap/ https://www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out that link! No extra cost to you! The LM334 is a three terminal adjustable current source. The amount of current through it and all series components are set by a fixed voltage (0.064V) across a resistor that connect the R and V- terminal. #LM334 #electronics #voltage ... https://www.youtube.com/watch?v=szawPA47XEQ