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  2. DC-to-DC converter - Wikipedia

    en.wikipedia.org/wiki/DC-to-DC_converter

    DC-to-DC converters are used in portable electronic devices such as cellular phones and laptop computers, which are supplied with power from batteries primarily. Such electronic devices often contain several sub-circuits, each with its own voltage level requirement different from that supplied by the battery or an external supply (sometimes higher or lower than the supply voltage).

  3. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

    www.aol.com/free-reverse-phone-lookup-8...

    Here Are 8 of the Best Sites for Free Reverse Phone Lookups There are a lot of sites out there that promise to do these searches for you, and it can be hard to tell which ones are legitimate.

  4. Coupon-eligible converter box - Wikipedia

    en.wikipedia.org/wiki/Coupon-eligible_converter_box

    A coupon-eligible converter box (CECB) was a digital television adapter that met eligibility specifications for subsidy "coupons" from the United States government.The subsidy program was enacted to provide terrestrial television viewers with an affordable way to continue receiving free digital terrestrial television services after the nation's television service transitioned to digital ...

  5. Chopper (electronics) - Wikipedia

    en.wikipedia.org/wiki/Chopper_(electronics)

    These are DC amplifiers. Some types of signals that need amplifying can be so small that an incredibly high gain is required, but very high gain DC amplifiers are much harder to build with low offset and / noise, and reasonable stability and bandwidth. It's much easier to build an AC amplifier instead. A chopper circuit is used to break up the ...

  6. Geek Squad - Wikipedia

    en.wikipedia.org/wiki/Geek_Squad

    Geek Squad, Inc. is a subsidiary of American and Canadian multinational consumer electronics corporation Best Buy, headquartered in Richfield, Minnesota.The subsidiary was originally an independent company founded by "Chief Inspector" Robert Stephens on June 16, 1994, and offers various computer-related services and accessories for residential and commercial clients.

  7. Flyback converter - Wikipedia

    en.wikipedia.org/wiki/Flyback_converter

    Fig. 1: Schematic of a flyback converter. The flyback converter is used in both AC/DC, and DC/DC conversion with galvanic isolation between the input and any outputs. The flyback converter is a buck-boost converter with the inductor split to form a transformer, so that the voltage ratios are multiplied with an additional advantage of isolation.

  8. Cable converter box - Wikipedia

    en.wikipedia.org/wiki/Cable_Converter_Box

    Pace Micro Technology DC757X HD cable box. A cable converter box or television converter box is an electronic tuning device that transposes/converts channels from a cable television service to an analog RF signal on a single channel, usually VHF channel 3 or 4, or to a different output for digital televisions such as HDMI.

  9. Electric power conversion - Wikipedia

    en.wikipedia.org/wiki/Electric_power_conversion

    A power converter is an electrical device for converting electrical energy between alternating current (AC) and direct current (DC). It can also change the voltage or frequency of the current. Power converters include simple devices such as transformers, and more complex ones like resonant converters.