GrahamH's photos with the keyword: supply

A cover plate on a redundant cooking gas supply system. February 2022.

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.

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.

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.

Interior of an old computer Uninterruptible Power Supply. Sadly its ability to provide power has been interrupted.

Interior of an old computer Uninterruptible Power Supply. Sadly its ability to provide power has been interrupted.

Interior of an old computer Uninterruptible Power Supply. Sadly its ability to provide power has been interrupted.

Interior of an old computer Uninterruptible Power Supply. Sadly its ability to provide power has been interrupted.

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 .

90s era battery charger for 12 V car batteries. With this type of charger run new leads from the red and black wires shown here to supply your model railway points switch motor control. Ignore the battery leads except for ensuring that the battery clips don't short to themselves or anything else.

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 .

Ancient PC power supply modified for bench use. PS found in an empty case beside a dumpster in 2003. See notes on this picture.

90s era battery charger for 12 V car batteries.

90s era battery charger for 12 V car batteries.

~ 1980 battery charger for 6 and 12 V car batteries.

~ 1980 battery charger for 6 and 12 V car batteries. With this type of charger just use the clip leads to supply your model railway points switch motor control.

90s era battery charger for 12 V car batteries.

~ 1980 battery charger for 6 and 12 V car batteries.