Welcome to this installment of EE Classroom on Capacitors.
Voltage applied then energy stored. The function of a capacitor feels simple, but its role in power supplies is vital—from the basic to the mission-critical, the latter of which involves careful consideration around longevity, high current handling, low ESR, SWaP (Space, Weight, and Power), and more. Finding the suitable capacitor at the level of reliability required is no simple task. So let us help.
In this classroom, you can build your knowledge base of capacitors by starting with a walk-through of the various capacitors and their properties. Catch up on complementary capacitor content with basics around TVS, surge voltages, and ways to protect and filter. With that foundation, move on to tips on how to select a capacitor for your application. From there, arm yourself with more need-to-know and what-to-watch-for info on ESR, parasitic capacitance, filtering, ESL, and more.