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  2. Opto-isolator - Wikipedia

    en.wikipedia.org/wiki/Opto-isolator

    Schematic diagram of an opto-isolator showing source of light (LED) on the left, dielectric barrier in the center, and sensor (phototransistor) on the right [note 1]. An opto-isolator (also called an optocoupler, photocoupler, or optical isolator) is an electronic component that transfers electrical signals between two isolated circuits by using light. [1]

  3. Slotted optical switch - Wikipedia

    en.wikipedia.org/wiki/Slotted_optical_switch

    The slotted optical switch, sometimes known as opto switch or optical switch but not to be confused with the optical component, is a device comprising a photoemitter (e.g. LED) and a photodetector (e.g. photodiode) mounted in a single package so that the photoemitter normally illuminates the photodetector, but an opaque object can be inserted in a slot between them so as to break the beam.

  4. Optoelectronics - Wikipedia

    en.wikipedia.org/wiki/Optoelectronics

    Electronic light sensors. Optoelectronics (or optronics) is the study and application of electronic devices and systems that find, detect and control light, usually considered a sub-field of photonics.

  5. Open collector - Wikipedia

    en.wikipedia.org/wiki/Open_collector

    Open collector, open drain, open emitter, and open source refer to integrated circuit (IC) output pin configurations that process the IC's internal function through a transistor with an exposed terminal that is internally unconnected (i.e. "open").

  6. 2025 Public Domain Day: Popeye, Tintin, more legendary ... - AOL

    www.aol.com/2025-public-domain-day-popeye...

    In practice, that looks like other artists being able to take a time-honored character and add their own creative license: Charlie Brown as a club DJ, for example, or Elmo as a CIA agent (though ...

  7. 5 ways to tell if you’re on track for retirement — and 5 ...

    www.aol.com/finance/5-ways-tell-track-retirement...

    For example, if you earn $60,000 annually, you should aim for $600,000 in savings by age 67. But like the Rule of 25, Fidelity’s guidelines offer a 10,000-foot look at retirement goals, and they ...

  8. This anti-aging Estée Lauder SPF foundation is 40% off at ...

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    This week, for example, you can get 40% off holiday kits that would be perfect stocking stuffers for the youngest beauty lover on your list, $100 off select Dyson hair tools and — perhaps our ...

  9. Resistive opto-isolator - Wikipedia

    en.wikipedia.org/wiki/Resistive_opto-isolator

    Opto-isolator VTL2C1 with LED input and photoresistor output. Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator [notes 1] or lamp-coupled photocell, [1] is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically ...