This mini ups circuit provides power to operate 12V, 9V and 5V DC-powered instruments at up to 1A current. The backup battery takes up the load without spikes or delay when the mains power gets interrupted. It can also be used as a work bench power supply that provides 12V, 9V and 5V operating voltages
4 Simple Uninterruptible Power Supply (UPS) Circuits Explored - Homemade Circuit Projects
Battery Backup
Mini UPS System For Router/Mobile Charger - DIY Project - INCPak
Uninterruptible Power Supply - Definition from
Mini Offline UPS Detailed Circuit Diagram Available
Transformer, switchgear and UPS design considerations
Wiring A Battery Backup Power UPS To A Subpanel – Battery Backup Power, Inc.
Advance Mini UPS Circuit - Engineering Projects
12V 600VA Inverter Project Using a Transformer Salvaged From UPS Electronic circuit projects, Electrical circuit diagram, Electronic schematics
4 Simple Uninterruptible Power Supply (UPS) Circuits Explored - Homemade Circuit Projects
Mini UPS Circuit Digram - Power-Supply_Circuits-Variable_Output - Power_Supply_Circuit - Circuit Diagram
DIY Mini UPS for WiFi Router V5.0 - Share Project - PCBWay
UPS Circuit Diagram with Repair and full Working Tutorial
Integrating uninterruptible power supplies (UPSs)