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Search results: 351   Output: 21-30
  1. Edward K. Miguel Electronic Design With this simple circuit configuration, an optoisolator can drive a standard 2N2222 transistor output high or low to indicate if the line voltage is 120 V or 220 V ac. For applications such as motor control or ...
    Circuits » Measurement » Vishay » H11AA1
    18-11-2016
  2. K Suresh EDN When you develop the prototype of a circuit using capacitors or when you replace an old, defective capacitor with a new one, you often need to know the value of the capacitor you use or replace. At times, the values printed on the ...
    09-11-2016
  3. Stephen Woodward EDN When you interconnect scientific instruments, especially older ones, you often need both gain and galvanic isolation for the analog interface functions. The amplifier in Figure 1 runs from 9 V batteries and fulfills both these ...
    03-11-2016
  4. Jose Carrasco EDN The simple circuit in Figure 1 can sense both low and high current levels without low sensitivities or loss of accuracy either at the low or the high end of the scale. The circuit is useful for discerning either low or high ...
    Circuits » Analogue Design · Measurement » Microsemi » 2N2060, 2N3810
    24-10-2016
  5. Gheorghe Plasoianu EDN Bench electronic loads are usually rated for voltages less than 100 V, which make it difficult to test high-voltage power supplies. This Design Idea offers an alternative: an inexpensive electronic load rated for 500 V or ...
    24-10-2016
  6. Jon Munson, Linear Technology Design Note 513 Introduction Accurately measuring voltages requires minimizing the impact of the instrument connection to the tested circuit. Typical digital voltmeters (DVMs) use 10 M resistor networks to keep loading ...
    Circuits » Analogue Design · High Voltage · Measurement » Linear Technology » LTC6090, LT5400, LT6654, LT8300, CMHZ4697
    10-10-2016
  7. Alan Adamsky Electronic Design The two battery-simulator circuits described here can help you quickly test a battery charger under a normal battery condition and an over-discharged battery condition. The circuits let you set any voltage to see how ...
    Circuits » Measurement · Power » Texas Instruments » LM431, IRFP3703, MTW24N40
    13-09-2016
  8. Louis Vlemincq Electronic Design The use of a copper winding as a temperature sensor is not new. The traditional technique is to disconnect the ac power and the load and to quickly make the measurement using an ohmmeter. But the circuit presented ...
    02-09-2016
  9. soldernerd.com I’ve just finished a little Arduino project. It’s a shield for the Arduino Uno that lets you measure inductance. This is a functionality that I found missing in just about any digital multi meter. Yes, there are ...
    11-08-2016
  10. Francesc Casanellas EDN Figure 1 illustrates a digitally programmable precision resistance that can serve as a microprocessor-driven power-supply load in custom-designed ATE (automatic-test equipment). An 8-bit current-output DAC, IC 1 , a DAC08 , ...
    09-06-2016
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