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Circuits & Schematics Light - 4

Subsection: "Light"
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Search results: 165 Output: 31-40
  1. Vijay Deshpande EDN A solar day lamp is a simple, inexpensive device for bringing “daylight” to dark interior spaces whenever the sun is shining. This article provides complete instructions for designing lamps using both passive and ...
    23-06-2020
  2. Grant Smith EDN Powering 20 to 30 white LEDs from three alkaline cells presents an interesting problem for the conventional boost converter. The required boost ratio and duty factor are simply impractical. If you are determined to design with ...
    12-06-2020
  1. Kyle Lawrence, Analog Devices Design Note 570 Introduction The LED backlights in automotive heads-up displays, infotainment systems, and dashboard lighting must be bright enough to compete with direct sunlight streaming into a car during the day, ...
    12-06-2020
  2. Aaron Lager EDN Using LEDs has gained popularity as a method of saving power for general-purpose lighting, but an efficient method for driving them has also become a necessity. For example, Lumileds' Luxeon devices create lighting effects or ...
    01-04-2020
  3. T A Babu EDN This flasher/beacon circuit can be employed as a distress signal on highways, a direction pointer for parking lots, hospitals, and hotels, etc. The circuit uses a power LED, and provides more light than a typical incandescent lamp ...
    02-11-2019
  4. Dan Awtrey Electronic Design By pairing a visible-light LED (VLED) with a depletion-mode MOSFET, you can create an efficient, controllable current-source driver. High-brightness visible-light LEDs (VLEDs) require a constant-current source. This ...
    25-07-2019
  5. Neda Shahi EDN Recent advances in operating efficiency have expanded the use of LEDs from one of mere indicators to becoming driving forces in electronic lighting. Increased reliability and ruggedness (versus other lighting technologies) gives the ...
    02-07-2019
  6. Marián Štofka EDN The human eye can see any color as a mixture of blue, red, and green. The circuit in Figure 1 produces all three colors through an Broadcom ASMT-YTB0 tricolor LED. You can produce a wide range of colors by varying ...
    12-05-2019
  7. Circuits Supply Light Maxim MAX1722 MAX4073
    Steve Caldwell EDN Although white LEDs are common in a variety of lighting applications, their 3 to 4 V forward-voltage drop makes low-voltage applications challenging. Charge pumps and other ICs are available for driving white LEDs, but they ...
    24-04-2019
  8. Jianwen Shao EDN Due to their light output and long life, high-brightness LEDs are well-suited for use in flashlights. Typically, the LEDs are driven with a constant current. So when the battery voltage drops, the flashlight just stops working. In ...
    24-04-2019
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