Free Altium Designer Trial: https://altium.com/yt/greatscott! Previous video: https://www.youtube.com/watch?v=C8Xpjj47vgU Waveform Generator video: https://www.youtube.com/watch?v=Y1KE8eAC9Bk Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Instagram: https://www.instagram.com/great.scott.lab/ Support me for more videos: https://www.patreon.com/GreatScott?ty=h You can get the components mentioned in the video here (affiliate links): Charge Pump Power Supply: https://s.click.aliexpress.com/e/_Ad0Us9 Diodes: https://s.click.aliexpress.com/e/_AmtdPf Capacitors: https://s.click.aliexpress.com/e/_9gfJRJ In this electronics basics episode we will be having a look at negative DC voltages. Now you usually do not require them alone, but pretty much always with a positive voltage as well. In this case the power supply that can provide these two voltages is called a dual rail power supply. So in this video you will not only find out where you need such a dual rail voltage but also how to create one with 3 different techniques! Let's get started! Websites which were shown/mentioned in the video: https://tangentsoft.net/elec/vgrounds.html https://robu.in/what-is-dual-power-supply-circuit-construction-and-working/ https://www.electronicsweekly.com/market-sectors/power/ten-best-ways-split-voltage-rail-2015-02/ https://en.wikipedia.org/wiki/Charge_pump https://www.ti.com/lit/ds/symlink/rc4580.pdf?ts=1648798873856&ref_url=https%253A%252F%252Fwww.google.com%252F https://www.analog.com/media/en/technical-documentation/data-sheets/1990fb.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/21456D.pdf https://datasheet.lcsc.com/lcsc/1809131515_Maxim-Integrated-MAX512CPD-_C80560.pdf https://www.ti.com/lit/ds/symlink/ne5532.pdf?ts=1648785673595&ref_url=https%253A%252F%252Fwww.digchip.com%252F Thanks to Altium for sponsoring this video. 0:00 Why Negative Voltages? 1:37 Intro 2:11 Charge Pump Design 5:44 Transformer Design 7:15 Simpler Rail Splitter Designs 9:26 Verdict