#183 How to select voltage regulators for small projects? (ESP8266, ESP32, Arduino)

Most of our modern processors and sensors need a stable power supply of 3.3 volts. Some older chips require 5 volts. And a raspberry pi needs nearly 1 ampere while an ESP in deep sleep requires only a few microamperes. Sometimes the current consumption is quite stable, and sometimes we have big current spikes like our ESP chips during Wi-Fi transfers. We will discuss the two different principles for control of voltage: Linear and switching (buck, boost) regulators We will find out why linear regulators efficiency often is bad and where this fact is not significant. We also look at the thermal design and how it influences maximum current We try to understand why switching regulators have higher efficiencies and can be built smaller for high currents or higher differences between input- and output voltage We look at the output ripple and on other high-frequency signals and where they can hurt We will test how the different regulators behave when your processor is in deep sleep Finally, you should be able to make the right decision for your project -And you should be able to do a small talk using all the buzzwords mentioned before ERROR CORRECTION: Low Quiescent Regulator is HT7333, not HT7111. Sorry. Links: Meter: http://s.click.aliexpress.com/e/aqBQjU3 STL Files for Box: https://www.thingiverse.com/thing:278... Step-Down Converter: http://s.click.aliexpress.com/e/3Beauf2 Step-Up Converter: http://s.click.aliexpress.com/e/y37I6Mf Supporting Material and Blog Page: http://www.sensorsiot.org Github: https://www.github.com/sensorsiot My Patreon Page:   / andreasspiess   If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel For Banggood https://bit.ly/2jAQEf4 For AliExpress: http://bit.ly/2B0yTLL For ebay.com: http://ebay.to/2DuYXBp https://www.facebook.com/profile.php?...   / spiessa   https://www.instructables.com/member/... Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job Equipment in my lab: http://www.sensorsiot.org/my-lab/