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In 2007, FSP Technology Inc. (Taiwan) acquired Protek Power (Taiwan) that makes medical power supplies. [2] Therefore, FSP Group now consists of Fortron/Source Corp. (USA), FSP Technology Inc. (Taiwan, public listed company, stock code 3015) and Protek Power (Taiwan). FSP Group's major power supply product lines include: PC / Industrial Power ...
Entry-Level Power Supply Specification (EPS) is a power supply unit meant for high-power-consumption computers and entry-level servers. Developed by the Server System Infrastructure (SSI) forum, a group of companies including Intel, Dell, Hewlett-Packard and others, that works on server standards, the EPS form factor is a derivative of the ATX ...
A regulated power supply is an embedded circuit; it converts unregulated AC (alternating current) into a constant DC. With the help of a rectifier it converts AC supply into DC. Its function is to supply a stable voltage (or less often current), to a circuit or device that must be operated within certain power supply limits.
A capacitive power supply usually has a rectifier and filter to generate a direct current from the reduced alternating voltage. Such a supply comprises a capacitor, C1 whose reactance limits the current flowing through the rectifier bridge D1. A resistor, R1, connected in series with it protects against voltage spikes during switching operations.
In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. The switched-mode power supply's higher electrical efficiency is an important advantage. Switched-mode power supplies can also be substantially smaller and lighter than a linear supply because the transformer can be much smaller.
The stability provided by the coating solved problems inherent to early power supply designs, as they used vacuum tubes. Because the funnel is used as a capacitor, the glass used in the funnel must be an excellent electrical insulator . The inner coating has a positive voltage (the anode voltage that can be several kV) while the outer coating ...
[2] Physicist Julius Edgar Lilienfeld proposed the concept of a field-effect transistor (FET) in 1925, [ 3 ] but it was not possible to construct a working device at that time. [ 4 ] The first working device was a point-contact transistor invented in 1947 by physicists John Bardeen , Walter Brattain , and William Shockley at Bell Labs who ...
Originally, the computer's case was the same beige color as the original Macintosh, Pantone 453; [2] however, in 1987, the case color was changed to the long-lived, warm gray "Platinum" color. [3] It is the earliest Macintosh model able to run System Software 5, System 6, and System 7, up to System 7.5.5, but not System 7.5.2.