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Power Supplies: UPS
Power Supplies -- Main Page

Last Updated on:
Saturday, August 30, 2014 10:28 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
An Alarm Power Supply With Battery Back-up -  This Power Supply is suitable for the Modular Burglar Alarm. However, it has other applications. It is designed to provide an output of 12-volts, with a current of up to 1-amp. In the event of mains failure, the back-up battery takes over automatically. When the mains is restored, the battery recharges.... [Circuit by Ron J.]
APC Back Pro UPS cable -  ….(Circuit design added 03/08)
APC Dumb UPS cable (simple) -  ….(design added 03/08)
APC Smart UPS cable -  This cable connects your PC to a Smart UPS from APC.  This will allow your PC to shutdown before the UPS is out of power. At UPS side: - pin 1 is RX / Shutdown - pin 2 is TX / AC Fail - pin 9 is Ground At the PC end (female connector): pins 1,4 (DCD, DTR) and pins 7,8 (RTS, CTS) must be shorted....
APC Smart UPS interface Port -  ….(electronic schematic added 03/08)
Basic UPS -  (electronic diagram added 6/03)

Build a UPS for USB devices -  11-Apr-02 Issue of EDN  Portable systems often include circuitry that derives power from an external source, such as USB. When the system disconnects from the USB supply, a battery takes over and supplies current via a dc/dc converter. A diode-OR connection (Figure 1] offers the easiest way to ensure that the supply voltage doesn't sag during this switchover to the battery.... [Design Idea by Mark Cherry and Jean-Claude Ailloud, Maxim Integrated Products, Sunnyvale, CA, and France]

Build a USB-based GPIB controller -  16-Dec-05 Issue of EDN  Roll-your-own USB-based instrumentation bus.... [Design Idea by Boštjan Glazar, Marko Jankovec, and Marko Topic, Laboratory of Semiconductor Devices, Ljubljana, Slovenia; Edited by Brad Thompson and Fran Granville]
Fiskars PowerRite UPS Port -  ….(electronic schematic added 03/08)
HP PowerWise L600/L900/L1250 UPS interface -  ….(Circuit design added 03/08)
Invertomatic-Victron (IMV) UPS intelligent (serial communication) cable -  ….(design added 03/08)
Liebert UPStation-GXT interface -  ….(design added 03/08)
Minuteman UPS -  ….(electronic schematic added 03/08)
MOSFET Circuit UPS Regulator's Output Current -  02/01/96 EDN-Design Ideas....Use a current mirror and a power MOSFET to increase the output-current capability of an IC-voltage regulator.… [Figure only]
PICREF-1: Uninterruptible Power Supply -  Microchip Application Note Published 28-Oct-05  (app note added 2/06)
PowerCom King UPS cable -  ….(design added 03/08)
Simple UPS -  This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supply. In the event of electrical supply line failure the battery takes over, with no spikes on the regulated supply.... [Circuit design by Andy Collison]
Small 12V UPS with U  feedback -  ....
Tripp-lite OmniPro 675 UPS -  ….(electronic schematic added 03/08)
Tripp-lite OmniPro-450 (675) PowerAlert Cable -  ….(design added 03/08)
Tripp-lite OmniPro-450 (675) WinNT Cable -  ….(Circuit design added 03/08)
Tripp-lite SmartPro Cable -  ….(design added 03/08)
Uninterruptable Power Supply -  This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supply. In the event of electrical supply line failure the battery takes over, with no spikes on the regulated supply....(electronic design added 6/07) [Designed by Andy Collinson]
UPS YUNTO P Series (250/500/750/1250) -  ….(design added 03/08)

 

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