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  2. ANSI device numbers - Wikipedia

    en.wikipedia.org/wiki/ANSI_device_numbers

    The "G" suffix can also mean "generator", hence an "87G" is a Generator Differential Protective Relay while an "87T" is a Transformer Differential Protective Relay. "F" can denote "field" on a generator or "fuse", as in the protective fuse for a pickup transformer.

  3. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    1.25 V or 1.4 V AC from a separate heater winding on CRT horizontal-output transformers, in half-indirectly heated EHT rectifiers; E – 6.3 V parallel heater; for 3-cell lead-acid vehicle crank batteries (mobile equipment) and for AC mains or horizontal-output transformers; F – 12.6 V DC parallel heater for 6-cell lead-acid vehicle crank ...

  4. Adam Freytag - Wikipedia

    en.wikipedia.org/wiki/Adam_Freytag

    Adam Freytag (16081650) was a Polish military engineer, mathematician and physician. He is best known for his work Architectura militaris nova et aucta , the first manual of bastion fortifications of the so-called Old Dutch system, published in 1631.

  5. Valve audio amplifier technical specification - Wikipedia

    en.wikipedia.org/wiki/Valve_audio_amplifier...

    The characteristics of valves as gain devices have direct implications for their use as audio amplifiers, notably that power amplifiers need output transformers (OPTs) to translate a high-output-impedance high-voltage low-current signal into a lower-voltage high-current signal needed to drive modern low-impedance loudspeakers (cf. transistors ...

  6. Flyback transformer - Wikipedia

    en.wikipedia.org/wiki/Flyback_transformer

    Unlike conventional transformers, a flyback transformer is not fed with a signal of the same waveshape as the intended output current. A convenient side effect of such a transformer is the considerable energy that is available in its magnetic circuit. This can be exploited using extra windings to provide power to operate other parts of the ...

  7. College Football Playoff Round 1 Overreaction: home field ...

    www.aol.com/sports/college-football-playoff...

    On this week's overreaction pod, Dan Wetzel Ross Dellenger and SI's Pat Forde acknowledge what led to home teams handedly winning each matchup. They cover how offensive line and defensive line ...

  8. Output transformerless - Wikipedia

    en.wikipedia.org/wiki/Output_transformerless

    Output transformerless (OTL) is a type of vacuum tube audio power amplifier, which omits an output transformer for the purpose of greater linearity and fidelity. Conventional vacuum tube amplifier designs rely upon an output transformer to couple the amplifier's output stage to the loudspeaker .

  9. Raw pork sausage and bologna recalled: Over 10,000 pounds of ...

    www.aol.com/raw-pork-sausage-bologna-recalled...

    16-oz. or various weight (larger than 16-oz.) vacuum-sealed chubs of “Ralph’s CIRCLE R BRAND GARLIC BOLOGNA with Jalapenos” with lot codes 0804, 1074, 1224, 1233, 1354, 2184, and 3374.

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