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Search results: 2,042   Output: 1-10
  1. Louis Vlemincq EDN This instrument determines the Q (quality factor) of a resonant circuit, crystal, or resonator by measuring its series resistance at the resonance frequency. The Q is linked to the series resistance by two simple equations (R S ...
    26-01-2015
  2. James Campbell Electronic Design This relatively simple circuit uses a 6-V DC supply with a PWM current-source configuration to provide efficient, adjustable dimming of a white LED over a wide range, needed to accommodate the unique lighting needs ...
    02-01-2015
  3. Kiril Karagiozov EDN One way you can control the temperature of a soldering iron is with a microcontroller, using temperature feedback from the thermistor in the handle near the iron's tip. This Design Idea presents a soldering iron driver that ...
    02-01-2015
  4. Hua (Walker) Bai, Linear Technology Design Note 508 Introduction The meaning of the term high power LED is rapidly evolving. Although a 350 mA LED could easily earn the stamp of high power a few years ago, it could not hold a candle to the 20 A LED ...
    Circuits » Supply · Light · Power » Linear Technology » LT3743, LT3763
    18-12-2014
  5. James Wood EDN The Design Idea in Figure 1 indicates a low-battery condition in an audio test instrument that is powered by four AA cells. As the instrument was otherwise an all-discrete design, this same approach seemed more in keeping with the ...
    10-12-2014
  6. R O Ocaya EDN The TL431 is a three-terminal programmable shunt regulator that implements Zener-like references with low temperature coefficients. Its output can be programmed from the internally set reference of about 2.5 V to 36 V using two ...
    Circuits » Oscillators · Supply » TL431, TL431A, TL431B, KA431, LM431
    27-11-2014
  7. Sandro Herrera EDN Currently, all commercially available three-op-amp instrumentation amplifiers (in-amps) offer a single-ended output, but many applications could benefit from an in-amp with a differential output. Offering many advantages over its ...
    Circuits » Analogue Design » Analog Devices » AD8476, OP2177
    27-11-2014
  8. Noureddine Benabadji EDN Embedded systems frequently use HD44780 -type LCD displays as it is considered the most popular alphanumeric display controller. The interface comprises at least 14 pins: eight for data, three for control (EN, WR, RS), two ...
    13-11-2014
  9. Mike Shriver, Linear Technology Design Note 505 Introduction The LTC®3838 is a dual output, dual phase buck controller that employs a controlled constant on-time, valley current mode architecture to provide fast load step response, high ...
    31-10-2014
  10. Clive Bolton EDN This Design Idea drives the 20mA current loops that are often used to control two-way proportional pneumatic or hydraulic servo valves in high power robotics applications. Most current drivers are capable of driving unipolar ...
    22-10-2014
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