Circuits & Schematics

Search results: 2,619 Output: 1-10
  1. EDN The battery monitor circuit in Figure 1 can be very helpful for any portable equipment powered by two 9-V batteries. When both batteries are in good health, an LED produces short bursts of light every second. If either or both batteries drop ...
    24-09-2020
  2. Circuits Supply Maxim MAX6025 MAX1087
    EDN If you use an ADC to monitor a system's power-supply voltage, you may encounter situations in which the supply voltage exceeds the ADC's reference voltage (Figure 1). However, the ADC's input voltage cannot exceed its reference ...
    17-09-2020
  3. 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
  4. 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
  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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