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Search results: 361   Output: 61-70
  1. Josef Valasek EDN If you develop an application on a small microcontroller, your diagnostic tools for debugging of the program code might be very limited. This Design Idea introduces a simple debugging routine for plotting the binary value of one ...
    20-05-2015
  2. Larry Beaty, Beatys Mills EDN This Design Idea came about as a result of my not having access to those wonderful new ICs that sense current. I needed a discrete circuit that I could build easily but that would still be as accurate as the new ICs. ...
    26-03-2015
  3. 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
  4. Mark Bieger EDN I often have to get a reasonably accurate temperature measurement for a laser, transistor, or printed circuit board. I usually use a thermistor for my temperature sensor because they are inexpensive. However, the thermistor’s ...
    26-01-2015
  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. Francesc Casanellas EDN This Design Idea presents a very accurate, yet very inexpensive, capacitance meter. It was specifically designed for measurements of low value capacitance with an accuracy of better than 1 pF for a gasoline capacitive level ...
    18-09-2014
  7. Petre Petrov EDN Many of the sensors capturing information from the world around us are resistive. A few examples are NTC, PTC, LDR, contact sensors. If we convert the resistance of the sensors into frequency or pulse duration, these parameters can ...
    01-08-2014
  8. Jordan Dimitrov EDN Designers often use VFCs (voltage-to-frequency converters) to perform A-to-D conversion in data acquisition systems that require strict monotonic response, high resolution, reduced noise and moderate speed. The VFC produces a ...
    06-05-2014
  9. Peter Demchenko, Vilnius, Lithuania EDN This Design Idea shows how to calculate the inductance of a multilayer air-core coil using only its dimensions and resistance. If you know the dimensions and the number of turns on an air-core coil, you can ...
    13-03-2014
  10. Raju Baddi, Tata Institute of Fundamental Research, Pune, India EDN Part 1 It is sometimes useful to listen to an audio signal at a test-circuit point. The 4069, with its high input impedance and sufficient output drive current of approximately 6.8 ...
    16-02-2014
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