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Search results: 354   Output: 81-90
  1. Raju Baddi, India EDN Bipolar junction transistors transfer a current from a lower-resistance emitter to a higher-resistance collector. You can use this property to measure inductance Bipolar junction transistors transfer a current from a ...
    24-02-2013
  2. Create the mathematical inverse of an analog voltage by converting it to frequency and measuring the period. Jordan Dimitrov, Toronto, ON, Canada EDN A popular series of inexpensive distance sensors integrates an infrared emitting diode, a linear ...
    10-02-2013
  3. This module integrates the sensor MMA7455L (produced by Freescale ), able to detect the movement on three axes, and then in every direction. The chip offers the possibility to select three different sensitivity ( 2g, 4g, 8g) and makes available, on ...
    28-01-2013
  4. This project is about building a microcontroller-based digital room thermometer plus hygrometer that displays temperature and relative humidity on 4 large (1 inch) seven segment LED displays which adjust their brightness level according to the ...
    18-01-2013
  5. Igor Lovrić Few months ago, I got request to find some kind of solution to measure G-Forces in moving car. I found a lot of commercial products on net, but in my country it is little bit difficult to buy them, so I decided to make my own ...
    17-01-2013
  6. Part 1 - Theory and Schematic Operation of the board The operation of the board is very simple. After powering the board from a 3-5.5 V supply, the Enable (EN) pin must be pulled high to activate the IR sensor. Next, place the tip of your ...
    24-12-2012
  7. Steven Lau, Ronald Moradkhan, Maxim Integrated Products When measuring the efficiency and load regulation of linear and switching voltage regulators, it is helpful to have access to an isolated, regulated current source to drive load under test ...
    Circuits » Measurement · Power » IL300
    24-12-2012
  8. When I first built the Heart rate measurement through fingertip project, the infrared LED and photodiode used for finger photoplethysmography were actually from salvaged parts, and therefore, I could not provide specifications for them in the ...
    30-11-2012
  9. The thermocouple is a kind of the temperature sensors. It is inexpensive and the measureing range is very wide compared to thermisters or temperature sensor ICs. However because the output voltage is small and relativistic, the thermocouple ...
    26-11-2012
  10. Ken Mendez, Maxim Integrated Products EDN Adding a secondary amplifier boost the THD to measurable levels Measuring an op amp’s THD (total harmonic distortion) at frequencies below 100 kHz is problematic because modern amplifiers have a THD ...
    20-11-2012
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