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Search results: 2,372   Output: 31-40
  1. Jim Brannan EDN Combining PWM with a small R-2R ladder improves both. It reduces PWM ripple significantly and increases the DAC’s resolution. In this Design Idea, an eight-resistor array and three output pins construct a modified R-2R ladder ...
  2. Benabadji Noureddine EEWeb With just three transistors, one relay, and some resistors and capacitors, a single light switch can provide sophisticated control of high-power and low-power lamps. A brief story behind this idea is as follows: Last ...
  3. Rex Niven EDN RFID is great technology, but noisy power and other aggressors can ruin performance. RFID readers using low frequency signals (ca. 130 kHz), like the industry-workhorse TIRIS RFM-007B , are of course very sensitive to noise in that ...
    Circuits » Wireless » Texas Instruments » RI-RFM-007B, LM2576
  4. S. Chekcheyev EDN The voltage amplifier in Figure 1 exhibits smaller nonlinear distortion than does the conventional amplifier in Figure 2. Figure 1. The addition of a simple diode in the emitter circuit yields the symmetric waveform in Figure 4. ...
  5. Abel Raynus EDN Rechargeable NiCd (nickel-cadmium) cells are widely used in consumer devices because of their high energy density, long life, and small self-discharge rate. As a part of one project, I needed to design a reliable and inexpensive ...
    Circuits » Supply » NXP » MC68HC908QT1
  6. Lance McBride EDN In many applications, it's desirable to disable LEDs used for system verification. Many options are available for the disabling function, including manual SPST (single-pole single-throw) switches, enhancement- and ...
  7. Jim Drew, Linear Technology Design Note 483 Introduction Recent advances in ultralow power microcontrollers have produced devices that offer unprecedented levels of integration for the amount of power they require to operate. These are systems on a ...
    Circuits » Supply » Linear Technology » LTC3588-1
  8. John Wynne EDN When two different-metal conductors connect together in a loop and one of the junctions is at a higher temperature than the other, an electrical current flows through the loop. The magnitude of this current depends on the type of ...
  9. Dobromir Dobrev EDN The classic three- or two-op-amp instrumentation-amplifier circuits are standard ways to amplify a small-amplitude differential signal contaminated with high common-mode noise. In some applications, the signal source is floating ...
  10. José Carrasco and Ausias Garrigós EDN Basic textbooks describe inverting and noninverting amplifiers based on operational amplifiers. These amplifiers have different gain equations. Whereas in the inverting configuration, the gain is ...

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