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Search results: 358   Output: 51-60
  1. Mitchell Lee EDN A source of pulses with fast-rising edges that approximate the step function can help you perform many useful laboratory measurements, including characterization of coaxial cables' rise times and location of cable faults using ...
  2. Susanne Nell EDN To measure high levels of direct current for overload detection and protection, designers frequently use either a current-shunt resistor or a toroidal core and Hall-effect magnetic-field sensor. Both methods suffer from drawbacks. ...
  3. Vladimir Rentyuk EDN Detecting a rapidly falling signal over some threshold is important for ultrasonic or location equipment as well as for seismology systems. You can combine a rail-to-rail operational amplifier with a Schmitt-trigger logic gate ...
  4. Gyula Dioszegi EDN In 1971, Signetics later Philips introduced the NE555 timer, and manufacturers are still producing more than 1 billion of them a year. By adding a few components to the NE555, you can build a simple voltage-to-frequency converter ...
    Circuits » Analogue Design · Measurement » Philips » NE555, TL071
  5. Have you ever been curious about the power consumption of an appliance? For example did you wonder how much it will cost you to leave your television in standby mode whole night? Or did you want to learn how much change your refrigerator settings ...
    Circuits » Measurement · Digital » Microchip » PIC18F252
  6. Jordan Dimitrov EDN While most carbon dioxide sensors use IR technology, electrochemical sensors are a serious competitor because of their high sensitivity, wide measurement range, and low price. As a rule, electrochemical sensors connect to a ...
  7. Robert Kong Embedded Developer, September 2014 This application note describes how to digitize analog sensors and how to transmit their values wirelessly using the NXP configurable tiny logic gates 74AXP1G57 (see Appendix). The ability of these ...
  8. 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 ...
  9. 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. ...
  10. 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 ...

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