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Regina Music Box – Regina's music boxes were their original product, and they had an 80–90% share of the market at the company's peak. Regina music boxes use a flat metal disc, as opposed to a cylinder. Sizes ranged from 8.5 to 27 inches. The boxes were renowned for the rich tone, and they used a double set of tuned teeth.
After the 1970s, vacuum switches began to replace the minimal-oil switches in medium-voltage switchgear. In the early 1980s, SF6 switches and breakers were also gradually replaced by vacuum technology in medium-voltage application. As of 2018, a vacuum circuit-breaker had reached 145 kV with a short-circuit rating of 200 kA. [4]
It received vacuum (port E on the switch) from the carburetor. The vacuum flowed through the switch to a vacuum solenoid (such as a heat riser, used to restrict exhaust allowing the engine to heat up faster). When the coolant heated to operating temperature the vacuum switch closed off the port (port S on the vacuum switch) turning off the ...
A simple 24-hour cyclical electromechanical time switch with a French CEE 7/5 socket. A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall ...
This image is a scan of a cover of an issue of TIME magazine, and the copyright for it is held by Time Warner, the parent company of TIME. It is believed that the use of low-resolution images of TIME magazine covers to illustrate an article, or part of an article, which specifically describes the issue in question or its cover,
This is a list of people or topics appearing on the cover of Time magazine in the first decade of the 2000s. Time was first published in 1923. As Time became established as one of the United States' leading news magazines, an appearance on the cover of Time became an indicator of notability, fame or notoriety. Such features were accompanied by ...
A vacuum dry box is a piece of safety equipment which can provide an inert, or controlled atmosphere for handling sensitive materials. [1] These devices can commonly be found in the fume hoods of chemistry labs, [ 2 ] in facilities handling deadly pathogens, in NASA [ 3 ] Moon rock handling facilities and in industrial applications.
As Time became established as one of the United States' leading news magazines, an appearance on the cover of Time became an indicator of notability, fame or notoriety. Such features were accompanied by articles. European, Middle Eastern, African, Asian and South Pacific versions of the magazine were published in addition to the United States ...