Circuits & Schematics Light: led - 6

51. Power an LED driver using off-the-shelf components
    Circuits Supply Light Texas Instruments NE555
    .. accurate current requires dedicated switching regulators. Choosing a discrete driver circuit requires an understanding of LED lighting to make the best trade-off. This Design Idea describes a simpler and equally good way to employ the ...
    07-06-2018

52. LED-String Driver Operates from Single Cell
    Circuits Supply Light
    .. Bruno Electronic Design This basic low-power driver, based on a few standard discrete components, can supply a variety of LED types and loads. Figure 1. With a few standard discrete components, this LED driver can source current to a series ...
    11-04-2017

53. High-side current-sensing switched-mode regulator provides constant-current LED drive
    Circuits Supply Light Maxim MAX4073T
    .. For example, references 1 , and 2 show circuits that use switched-mode-regulator ICs and low-voltage sources to supply LED current. To produce a constant-current output using the circuit in Reference 1 , you configure the regulator IC as ...
    18-05-2017
54. Hybrid Switching/Linear Method Yields LED-Current Controller with Wide Dimming Ratio
    Circuits Supply Light Linear Technology LT3083 LT6015 LT8614 LTM8042
    .. this circuit provides an easily controlled current source that is well-suited for dimming LEDs Many applications for LED illumination require wide dimming ratios, which can be easily done using an adjustable current source (Fig. 1). ...
    21-06-2017
55. Stealth-mode LED controls itself
    Circuits Light Avago Technologies HLMP-EG30-NR000
    .. Myers EDN Since the LED's invention more than 40 years ago, its emission efficiency has steadily increased, and, although it may ...
    05-07-2017
56. Simple single-cell white-LED driver uses improvised transformer
    Circuits Supply Light
    .. Grant EDN A white LED delivers a wide color spectrum and better visibility than do monochromatic LEDs. However, a white LED presents a ...
    23-01-2018
57. Single cell lights any LED
    Circuits Analogue Design Light
    .. Dutcher EDN The circuit in Figure 1 allows you to light any type of LED from a single cell whose voltage ranges from 1 to 1.5 V. This range accommodates alkaline, carbon-zinc, NiCd, or ...
    29-01-2018
58. Simple Ambient Light Sensor Controls White LED Driver
    Circuits Automation Analogue Design Light Texas Instruments OPA336N
    .. Sundararaj Electronic Design This idea describes a white-LED (WLED) driver circuit controlled by a simple ambient light sensor (ALS). A typical application would be a ...
    11-03-2018
59. Simple Threshold Switch For An LED Indicator
    Circuits Analogue Design Light Texas Instruments TL431
    .. H. Russell Electronic Design I needed a simple LED indicator showing that a particular voltage level had been reached specifically, that a capacitor had charged to a ...
    17-04-2018
60. Single-port pin drives dual LED
    Circuits Microcontrollers Usage Light Siemens BSS101
    .. reasonably large amounts of current. This Design Idea shows three alternative methods for driving a two-pin, two-color LED from a single I/O pin. Figure 1 illustrates one possible approach that uses external inverter IC 1 to drive D 1 , a ...
    23-05-2018

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