The box is cleverly designed to give quick access to the parts inside, having a lift-up lid and a pull-down front. The components within appear to be a portable radio, power supply or power converter with batteries and a charger. The attached leather strap makes the equipment easily portable. The portable power supply is significant for representing part of the evolutionary change in communications. The unit connects the use of power and radio for communication with the ability to save the power in power packs or batteries, or to convert the power from one form to another.Power supply, portable, electric; circuits can be Parallel or Series. Batteries (6) fitted into a square wooden box. Box has two catches to secure the lid and two catches to secure the drop-down front. Holes have been drilled around the edges of the lid and the top of the base. Inside the front panel are two copper coils, switches and connectors. Leather carry strap attached. Stamped into the vertical panel are "parallel", "P", "H", "SERIES", CAVERTY", "LIGHT" :WEAK", "CHARGING" Stamped into the vertical panel are "parallel", "P", "H", "SERIES", CAVERTY", "LIGHT" :WEAK", "CHARGING" flagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, portable power supply, power supply, battery box, battery, communication, radio, portable radio, battery powered radio, electronic instrument

Digital image of a folded A4 pamphlet titled "Power supply upgrade project - J. S. Grey Reserve West Preston", about the construction of a new sub-station on the reserve, gives construction dates, impact, site plan, elevation plan, reason or need for the sub-station for tram power upgrades. Dated July 2016. A4 print made for files.trams, tramways, substation, power supply, yarra trams, west preston

Report details the history of the power supply for the Victorian Railways, electric street railways or tramways. Looks at the costs, equipment purchased, operation, and construction. Compiled from original VR documents, with photos. Includes the Elwood depot fire of 1907, Covers the provision of power for Sandringham tramway. Has drawings of the main switchboard layouts, the crossing of the St Kilda - Brighton tramway by the MMTB tramways. Author unknown.Yields information about the provision of the power supply for VR Trams.Report 50 x A4 pages - photocopied from an original document. trams, railways, vr trams, sandringham, st kilda brighton electric tramway, power supply, elwood depot, elwood substation, substations

Digital images of a set 8 pamphlets for the provision of a new sub-station at St Kilda Junction from early 2016 to late 2018 including architectural treatments of the building done after a lot of adverse criticism. .1 - Pamphlet - PTV049 - 17 - titled "Power Supply Upgrade Project" .2 - Update on the St Kilda Junction sub-station - has a project timeline - c April 2017 .3 - Letter to residents dated 13/4/2017, providing information and time for an information session. .4 - ditto 16/10/2017 .5 - ditto dated 28/11/2017 providing options for the facade. .6 - local community group report - JAAG providing information on the options put forward and why they were rejected. .7 - Architectural options by Jacksons Architecture .8 - Update on the St Kilda Junction Facade Project for completion late 2018.trams, tramways, substation, power supply, yarra trams, st kilda junction

Switching on of the S.E.C. power supply for Stawell. Sept 1968stawell electricity power

Interior of the Power House Sloane Street. Electric Power Supply for the town of Stawell.stawell electricity power

The Mayor Cr K Lawson receiving a cheque from the SEC at the switching on of the S.E.C. power supply for Stawell.stawell electricity power

Yields information about the electrical power supply and overhead switching for Ballarat in 1914.Rolled drawing showing Tramway Power supply arrangements 1914, track map, power station, feeder cable, switches, section insulators, box locations, lightning arrestors and feeder cables for the various routes in Ballarat. Dated 2/1/1914, with initials GL. The various cables and trolley wire has been drawing in differing colours.ballarat, power station, overhead, section insulators

A section of the machinery in the former Sunbury Power House which was used to generate the town's electricity supply. The power house was situated on the the corner of Jackson and Shields Street. B/W photograph of the Producer Plant (gas) at Sunbury Power Supply.Handwritten on back: Section of the Producer Plantsunbury power supply, gas, george evans collection

A section of the former Sunbury Power House in the battery shed with machinery used to generate electricity for the Sunbury township.B/W photograph of an interior view of the Sunbury Power SupplyNumbers on back: 4�sunbury power supply, george evans collection

B/W photograph of the generating plant and switchboard at Sunbury Power Supply.Pencilled on back: 4�sunbury power supply, generators, george evans collection

This item of machinery was housed in the former Sunbury Power House, where the town's electricity was generated.B/W photograph of a vertical engine and generator from Sunbury Power Supply.Penciled on back: 4�engines, vertical engine, sunbury power supply, generators, george evans collection

A cream coloured manual with black writing on the cover. There is written in blue ink 18615 2Lt L.B. Dawsonelectronic manuals, communications, military radios

What device converts AC to DC? rectifier A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification, since it "straightens" the direction of current. The unit was used at Ballarat School of Mines in the Maths, Science and Physics Departments.Grey metal unit with Dials on the front and vents at the back. Handle for carrying. Two switches for turning on and off. Yellow sticker - SMB - with number 116071. Engraved on back - S.M.B.. Maths / Science / Physics Sticker on cord indicating inspection of unit - 13/04/2005. Tag Number - 032735alternating current, direct current, ac, dc, rectifier, electrical, ballarat school of mines, science, maths, physics

Ten page report or article written by A. D. Senior, dated 29 August 1984 titled "Electricity Supply in Ballarat". Gives a background to power supply in Ballarat from 1885, takeover by ESCo, DC and AC power supply, generators, Buniyong, SEC, A and B power stations, farm supply, illumination or lighting, tramways and tram braking systems. Photocopied from original on foolscap sheets with staple in top left hand corner. See also Reg Item 1701 and 1702.Pink highlights on page 1, ink notes, pencil notes on page 3 re Creswick and ink corrections on page 7.trams, tramways, power supply, ballarat, sec, power station, esco