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  2. Transfer switch - Wikipedia

    en.wikipedia.org/wiki/Transfer_switch

    Simplified single line diagram of a single-phase transfer switch to select either 'city' (utility) power or local generator power 3-phase Intelligent transfer switch. A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator effects the transfer by throwing a ...

  3. Phase detector characteristic - Wikipedia

    en.wikipedia.org/wiki/Phase_detector_characteristic

    A phase detector characteristic is a function of phase difference describing the output of the phase detector. For the analysis of Phase detector it is usually considered the models of PD in signal (time) domain and phase-frequency domain. [1] In this case for constructing of an adequate nonlinear mathematical model of PD in phase-frequency ...

  4. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    ASME Y14.44-2008 [1] and IEEE 315-1975 [2] define how to reference and annotate components of electronic devices. It breaks down a system into units, and then any number of sub-assemblies. The unit is the highest level of demarcation in a system and is always a numeral.

  5. Phase detector - Wikipedia

    en.wikipedia.org/wiki/Phase_detector

    A phase frequency detector (PFD) is an asynchronous circuit originally made of four flip-flops (i.e., the phase-frequency detectors found in both the RCA CD4046 and the motorola MC4344 ICs introduced in the 1970s). The logic determines which of the two signals has a zero-crossing earlier or more often.

  6. Lock-in amplifier - Wikipedia

    en.wikipedia.org/wiki/Lock-in_amplifier

    More advanced, so called two-phase lock-in-amplifiers have a second detector, doing the same calculation as before, but with an additional 90° phase shift. Thus one has two outputs: = ⁡ is called the "in-phase" component, and = ⁡ the "quadrature" component. These two quantities represent the signal as a vector relative to the lock-in ...

  7. Mortgage and refinance rates for Dec. 26, 2024: Rates for 30 ...

    www.aol.com/mortgage-and-refinance-rates-for-dec...

    See today's average mortgage rates for a 30-year fixed mortgage, 15-year fixed, jumbo loans, refinance rates and more — including up-to-date rate news.

  8. Foster–Seeley discriminator - Wikipedia

    en.wikipedia.org/wiki/Foster–Seeley_discriminator

    Foster-Seeley (or "phase") discriminator schematic. The Foster–Seeley discriminator [1] [2] is a common type of FM detector circuit, invented in 1936 by Dudley E. Foster [3] and Stuart William Seeley. The Foster–Seeley discriminator was envisioned for automatic frequency control of receivers, but also found application in demodulating an FM ...

  9. No. 2 Ohio State blitzes No. 5 Indiana with 31 consecutive ...

    www.aol.com/sports/no-2-ohio-state-blitzes...

    No. 2 Ohio State is one win away from a rematch with No. 1 Oregon. The Buckeyes capitalized on poor special teams play from Indiana on the way to 31 straight points in a 38-15 win over the No. 5 ...