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  1. EDN Modern high-performance transmitters require accurate monitoring of RF power, because most cellular standards depend on strict power- transmission levels to maintain an effective network. Regulation of transmitted-signal strength also lets you ...
    13-09-2020
  2. EDN Rectifiers convert ac signals to dc. You can combine a diode and a load resistor to create a half-wave rectifier, provided that the amplitude of the ac source is much larger than the forward drop of the diode (typically 0.6 V). Unfortunately, ...
    12-09-2020
  3. EDN This Design Idea presents a self-powered, precision-active-load circuit that improves on a previously published design (Reference 1). Added features include a wider operating-voltage range of 2 to 50 V or higher and several flexible ...
    10-09-2020
  4. Jui-I Tsai, Woei-Wu Pai, Feng-Chang Hsu, Po-Jui Chen, Ching-Cheng Teng, Tai-Shan Liao EDN Most laboratories and industrial environments have many kinds of electrical-noise sources at all frequencies from heavy machinery, instruments, power ...
    10-09-2020
  1. Philip Karantzalis EDN In low-noise analog circuits, a high-gain amplifier serves at the input to increase the SNR. The input signal level determines the input-stage gain; low-level signals require the highest gain. It is also standard practice in ...
    05-09-2020
  2. Christian Rausch EDN Designers use ballast ICs, such as International Rectifier’s IR53HD420 , in CFLs (compact fluorescent lamps) for heating the filaments, igniting the lamps, and supplying the lamps with current. Manufacturers produce these ...
    02-09-2020
  3. Gavin Watkins EDN A recent project evaluated the feasibility of a dynamic load modulation (DLM) RF power amplifier for 5G. DLM amplifiers typically use high-voltage varactor diodes in their output network, which need to be driven by high-speed ...
    27-08-2020
  4. Circuits Supply Analog Devices AD5116 ADCMP371 ADP121
    Thomas Brand Analog Dialogue Question: How could I use a digital potentiometer to generate an adjustable voltage output? Answer: By using a push-button digital potentiometer. This article describes a complete solution in which a voltage up to 20 V ...
    27-08-2020
  5. Michael Fisch EDN Laser diodes are sensitive to ESD, rapid turn-on currents, and overvoltage conditions. To address those problems, the simple laser-diode controller in Figure 1 has several functions. The first part of the circuit comprises an 8.2 ...
    27-08-2020
  6. Circuits Supply Maxim MAX6138 MAX1683
    Will Hadden, Maxim Integrated Products EDN A small and simple circuit derives 5 V from the 48 V rail that telecomm applications typically use (Figure 1). Useful for gate bias and other purposes, the 5 V supply delivers as much as 5-mA output ...
    26-08-2020