GrahamH's photos with the keyword: switch

UPSrear 0717 2618

UPSrear 0717 2618

GrahamH
28 Jul 2017 242
My UPS which I did fix. It is similar to the one in the previous four photos. It keeps the internet on during power blackouts. These are intended to supply a desktop PC for a few minutes in a power outage to enable the user to save work and close correctly. The RS232 socket enables communication with the PC for UPS management and auto shutdown of the PC before the battery is flat. The black cable is mains power in and the white cable is continuous power out. The white socket above the cable is mains supply out to a printer. This socket and the network cable sockets have surge protection. July 2017.
UPSfront 0717 2617

UPSfront 0717 2617

GrahamH
28 Jul 2017 192
My UPS which I did fix. It is similar to the one in the previous four photos. It keeps the internet on during power blackouts. July 2017.
ADSLandUPS 0717 2587

ADSLandUPS 0717 2587

GrahamH
28 Jul 2017 217
My about to be replaced ADSL gear and a UPS which I did fix. It keeps the internet on during power blackouts. July 2017. See notes.
Bench Computer PS 004

Bench Computer PS 004

GrahamH
06 Dec 2012 195
Ancient PC power supply modified for bench use. PS found in an empty case beside a dumpster in 2003. See notes on PS 002. See notes on www.ipernity.com/doc/grahamh/24028051/in/album/464585 .
Bench Computer PS 007

Bench Computer PS 007

GrahamH
06 Dec 2012 193
Ancient PC power supply modified for bench use. PS found in an empty case beside a dumpster in 2003. See notes on www.ipernity.com/doc/grahamh/24028051/in/album/464585 .
Bench Computer PS 002

Bench Computer PS 002

GrahamH
06 Dec 2012 274
Ancient PC power supply modified for bench use. PS found in an empty case beside a dumpster in 2003. See notes on this picture.
ATX power plug PS No2 002

ATX power plug PS No2 002

GrahamH
02 Feb 2013 160
This is the other side of the 20 way connector from this Bench Computer PS No 2 003 .
Bench Computer PS No 2 005

Bench Computer PS No 2 005

GrahamH
23 Jan 2013 190
An old nearly ATX power supply set up for use as a bench supply. See note on www.ipernity.com/doc/grahamh/23993553/in/album/463841 . This needed a load on the +5V rail for the supply to operate. Instead of a resistor I used a 12V 10W auto lamp which doubles as pilot lamp. I have yet to fit a DC switch, the green switch wire is earthed till then.
ATX power plug PS No2 001

ATX power plug PS No2 001

GrahamH
02 Feb 2013 179
This is one side of the 20 way connector from this Bench Computer PS No 2 003 .
Bench Computer PS No 2 004

Bench Computer PS No 2 004

GrahamH
23 Jan 2013 210
An old nearly ATX power supply set up for use as a bench supply. This needed a load on the +5V rail for the supply to operate. Instead of a resistor I used a 12V 10W auto lamp which doubles as pilot lamp. I have yet to fit a DC switch, the green switch wire is earthed till then. See note on www.ipernity.com/doc/grahamh/23993553/in/album/463841 .
Bench Computer PS No 2 002

Bench Computer PS No 2 002

GrahamH
23 Jan 2013 227
An old nearly ATX power supply set up for use as a bench supply. This needed a load on the +5V rail for the supply to operate. Instead of a resistor I used a 12V 10W auto lamp which doubles as pilot lamp. I have yet to fit a DC switch, the green switch wire is earthed till then. See note on www.ipernity.com/doc/grahamh/23993553/in/album/463841 .
Bench Computer PS No 2 003

Bench Computer PS No 2 003

GrahamH
23 Jan 2013 306
An old nearly ATX power supply set up for use as a bench supply. This needed a load on the +5V rail for the supply to operate. Instead of a resistor I used a 12V 10W (5W was too little load and 21W was unnecessarily large) auto lamp which doubles as pilot lamp. I have yet to fit a DC switch, the green switch wire is earthed till then.