Switched-mode power supply - Wikipedia

What is SMPS (Switched-mode Power Supply)?

Bourns - Switch Mode Power Supplies

Power supply unit (computer) - Wikipedia

Power supply unit (computer) - Wikipedia

What is a switched-mode power supply?

DC 12V 360W 30A Universal Regulated Switching Mode Power Supply for 3D Printer CR-10 CR-10S 3D Smart Printer - AliExpress

Transfer switch - Wikipedia

PoE Texas 8 Port PoE Injector - 10/100 Passive Power Over Ethernet with 48V 60W UL Power Supply - 802.3af PoE Injector for VoiP Phones, WiFi Access Points, IP Cameras

How PC Power Supplies Work

Switch Mode Power Supply and Switching Regulators

What is Switch Mode Power Supply? - Sunpower UK

Power supply unit (computer) - Wikipedia