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Search results: 102   Output: 1-10
  1. .. CMOS CD4017 Johnson counter The circuit is divided into two portions for easy understanding: Logic control (Figure 1) and LED driver (Figure 2). Figure 1. LED controller. The circuit is controlled by a momentary push switch. Until SW1 is ...
    Circuits » Supply · Light » Texas Instruments » CD4017B, TL431
    10-08-2017
  2. .. Myers EDN Since the LED's invention more than 40 years ago, its emission efficiency has steadily increased, and, although it may ...
    Circuits » Light » Avago Technologies » HLMP-EG30-NR000
    05-07-2017
  3. .. 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). ...
    Circuits » Supply · Light » Linear Technology » LT3083, LT6015, LT8614, LTM8042
    21-06-2017
  4. .. 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 ...
    Circuits » Supply · Light » Maxim » MAX4073T
    18-05-2017
  5. .. Passmore EDN As in a previous Design Idea (Reference 1), this design uses an LED as a transducer to measure the ambient-light level and to provide illumination. This Design Idea uses the same ...
    09-05-2017
  6. .. 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
  7. .. 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 ...
    Circuits » Analogue Design · Light » Maxim » MAX4238
    23-03-2017
  8. .. information In this article we will talk about a simple device that I designed for automatic control of additional LED lighting in the kitchen. Kitchen renovating and complete replacement of kitchen cabinetry are main reasons for ...
    15-03-2017
  9. .. 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 ...
    01-03-2017
  10. .. helped to minimize the size and power consumption (Figure 1). Figure 1. This circuit provides fast light pulses in a blue LED. The normally high pulses at the output gate, G4, in IC 2 have rise and fall times of approximately 2.5 nsec and a ...
    Circuits » Light » NXP » ICM7555
    15-01-2017
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