Circuits & Schematics - Light: led - 5

41. The perfect Remote, Programmable, Controller for interactive LED strips. Part 2 - Controller Configuration, Connections and Operation
    Circuits Wireless Microcontrollers Usage Light
    .. control, either UP or DOWN, allows to turn off or turn on the respective output based on the current brightness: so if the LED strip is turned on, by pressing one of two buttons of the channel, the strip itself turns off and pressing it ...
    Oct 30, 2015

42. LED strobe has independent delay and duration
    Michael Page
    Circuits Automotive Measurement Light NE555
    .. The circuit in Figure 1 shows the main-clock input; the delay and duration potentiometers, P 1 and P 2 ; and the HB-LED output. The circuit also includes an onboard general-purpose LED for bench testing to indicate an input signal, ...
    Nov 4, 2015

43. Protect an LED driver against output shorts to ground
    Circuits Supply Light Power Texas Instruments INA201 TPS40211
    .. Rice, Texas Instruments LEDs Magazine The non-synchronous, boost, power-conversion topology is often used in LED drivers in instances where the input voltage (VIN) is insufficient to forward bias a series/parallel set of LED ...
    Nov 23, 2015
44. A Low-cost 0.5 A 33 V LED driver module with 90+% efficiency
    Circuits Light Power Taiwan Semiconductor TS19376CY5
    .. from 0.1 to 0.5 A. This article outlines the schematic, design guidelines, operation, and performance of the low cost LED driver. Short description LED driver module (Fig. 1) is built on buck driver IC TS19376CY5 in a SOT89-5 package. ...
    Feb 26, 2016
45. Simplified white-LED flasher operates from one cell
    Anthony Smith
    Circuits Supply Light Fairchild NC7SV57
    .. white-LED flasher in Figure 1 offers an alternative approach to a previously published idea ( Reference 1 ). Targeting use in ...
    Jun 23, 2016
46. μModule LED Driver Integrates All Circuitry, Including the Inductor, in a Surface Mount Package
    David Ng
    Circuits Light Power Linear Technology LTM8040
    .. Note 445 Introduction Once relegated to the hinterlands of low cost indicator lights, the LED is again in the spotlight of the lighting world. LED lighting is now ubiquitous, from car headlights to USB-powered ...
    Jun 28, 2016
47. 60V Buck-Boost LED Driver with Up to 98% Efficiency Has Internal PWM Dimming and Spread Spectrum
    Keith Szolusha
    Circuits Supply Light Linear Technology LT8391
    .. the next generation of buck-boost converters masters these challenges and more. The LT8391 60 V four-switch buck-boost LED driver is designed to drive high power LEDs up to 250 W and to flawlessly transition between two-switch boost, ...
    Oct 18, 2016
48. 3A, 1MHz Buck Mode LED Driver with Integrated Voltage Limiting
    Circuits Light Power Linear Technology LT3952
    .. Grant, Linear Technology Design Note 556 Introduction The LT®3952 monolithic LED driver includes a 4 A, 60 V DMOS power switch, excellent for driving high current LEDs in buck mode. Among its many ...
    Mar 1, 2017
49. LED strings driven by current source/mirror
    Luca Bruno
    Circuits Analogue Design Light Maxim MAX4238
    .. 1 is a precision current mirror used to drive two strings of five white LEDs. Figure 1. Current source/mirror driving two LED strings. The op-amp has double negative feedback (since M2 inverts the signal at the non-inverting input). The ...
    Mar 23, 2017
50. Power an LED driver using off-the-shelf components
    T A Babu
    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 ...
    Jun 7, 2018

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