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  2. LED circuit - Wikipedia

    en.wikipedia.org/wiki/LED_circuit

    Drivers may be constant current (CC) or constant voltage (CV). In CC drivers, the voltage changes while the current stays the same. CC drivers are used when the electrical load of the LED circuit is either unknown or fluctuates, for example, a lighting circuit where a variable number of LED lamp fixtures may be installed.

  3. 0-10 V lighting control - Wikipedia

    en.wikipedia.org/wiki/0-10_V_lighting_control

    Dimming fluorescent ballasts and dimming LED drivers often use 0–10 V control signals to control dimming functions. In many cases, the dimming range of the power supply or ballast is limited. If the light output can only be dimmed from 100% down to 10%, there must be a switch or relay available to kill power to the system and turn the light ...

  4. Dimmer - Wikipedia

    en.wikipedia.org/wiki/Dimmer

    This unit is wired in series with the load. Diodes (D2, D3, D4 and D5) form a bridge, which generates pulsed DC. R1 and C1 form a circuit with a time constant. As the voltage increases from zero (at the start of every halfwave) C1 charges up. When C1 is able to make Zener diode D6 conduct and inject current into the SCR, the SCR fires. When the ...

  5. Aftershocks Continue After Northern California Earthquake ...

    www.aol.com/strong-earthquake-strikes-near...

    Aftershocks continued Friday after a strong earthquake that prompted a tsunami warning for parts of the U.S. West Coast Thursday. "At this time, there have been 59 earthquakes of magnitude three ...

  6. Constant-current diode - Wikipedia

    en.wikipedia.org/wiki/Constant-current_diode

    It is known as a current-limiting diode (CLD) or current-regulating diode (CRD). Internal structure. It consists of an n-channel JFET with the gate shorted to the source, which functions like a two-terminal current limiter (analogous to a voltage-limiting Zener diode). It allows a current through it to rise to a certain value, but not higher.

  7. US economy grows at 2.8% pace in third quarter on ... - AOL

    www.aol.com/us-economy-grows-2-8-133916189.html

    The American economy expanded at a healthy 2.8% annual pace from July through September on strong consumer spending and a surge in exports, the government said Wednesday, leaving unchanged its ...

  8. Digital Addressable Lighting Interface - Wikipedia

    en.wikipedia.org/wiki/Digital_Addressable...

    Digital Addressable Lighting Interface (DALI) is a trademark for network-based products that control lighting.The underlying technology was established by a consortium of lighting equipment manufacturers as a successor for 1-10 V/ 0–10 V lighting control systems, and as an open standard alternative to several proprietary protocols.

  9. FDA Issues Urgent Warning on Dangers of Common Dog Medication

    www.aol.com/lifestyle/fda-issues-urgent-warning...

    The United States Food and Drugs Administration is warning pet owners about a common medication given to pets to treat arthritis. The F.D.A. now says that the drug Librela may be associated with ...

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