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Search results: 351   Output: 81-90
  1. 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 ...
  2. 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 ...
  3. 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 ...
  4. 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
  5. 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 ...
  6. 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 ...
  7. 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 ...
  8. Part 1 - Theory In the first part of this discussion, the features of ACS712 device were briefly discussed. Now we will use that theory to implement the ACS712 sensor to make a simple DC current meter. The analog output voltage from the sensor is ...
  9. Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, ...
  10. Temperature-indicator and temperature-based products have generated wide interest. There are numerous applications for such devices with many possible solutions, each with its own advantages and disadvantages. This idea discusses a sensor interface ...

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