2N3904 NPN BJT voltage reference set by trimpot variable resistor. https://electronzap.com/npn-bjt-trimpot-adjustable-voltage-reference-circuit-similar-to-zener-diode/ has the diagram and an affiliate link to Art of Electronics posted to it. 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.twitch.tv/electronzap I now do my gaming, Fallout 4 for the time being, on Twitch. #2N3904 #BJT #electronics ... https://www.youtube.com/watch?v=iZpmQFozQJ0

List of my videos https://www.youtube.com/c/electronzap/videos https://www.amazon.com/shop/electronzapdotcom/list/1ADLVE33FFFYL?ref_=cm_sw_r_cp_ud_aipsflist_aipsfelectronzapdotcom_B79P02M0KFPJ24S768FC 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. My website https://electronzap.com/ To donate https://www.patreon.com/electronzap Become a member https://www.youtube.com/channel/UCC8jLsnnN1_o93p5QOIX1vA/join https://www.reddit.com/r/ElectronicsStudy/ Push button switch basics. Demonstration circuit powered with a 12V LiFePO4 battery. #electronics #lifepo4 #DIY ... https://www.youtube.com/watch?v=ktCuI8PIvIo

NAND logic gate demonstrated with 74HC00 integrated circuit (IC). https://electronzap.com/brief-7400-quad-2-input-nand-gate-integrated-circuit-ic-demonstration-74hc00/ https://www.youtube.com/c/electronzap https://electronzap.com/brief-circuit-schematics-with-short-video-list-of-pages/ 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! Electronics quick video series tutorials by Electronzap and Electronzapdotcom. NAND logic gate made with a couple 2N2222 NPN bipolar junction transistors (BJTs). #7400 #electronics #NANDgate ... https://www.youtube.com/watch?v=SeSHhROKa5o

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/ Zener diode can be used to set a simple reference voltage. The amount current flowing though it is also important to understand. #Electronics #Howto #diy ... https://www.youtube.com/watch?v=eNsOb2u70pQ