Circuits & Schematics - Automation - 5

Systems for industrial and home automation, data-loggers.

41. Bipolar 20 mA current-loop driver for robotic valves and other applications
    Circuits Automation Power
    Clive Bolton EDN This Design Idea drives the 20mA current loops that are often used to control two-way proportional pneumatic or hydraulic servo valves in high power robotics applications. Most current drivers are capable of driving unipolar ...
    Oct 22, 2014
42. Increasing Output Voltage and Current Range Using SeriesConnected Isolated µModule Converters
    Circuits Automation Supply Power Application Notes Linear Technology LTM8057 LTM8058 LTM8046 LTM8047 LTM8048
    Design Note DN530 July 2014 Jesus Rosales, Willie Chan Linear Technology's isolated µModule converters are compact solutions for breaking ground loops. These converters employ a flyback architecture whose maximum output current varies with ...
    Sep 2, 2014

43. osPID - open source PID-controller. Part 2 - Input/Output Cards, Software
    Circuits Automation MCU Open-Source Platforms Microcontrollers Usage Arduino
    Part 1 Input Card The input cards come in several types, each tailored to a different type (or types) of input. The first input card we designed is capable of measuring temperature through either a thermistor or thermocouple. Work on the next input ...
    Mar 10, 2014
44. osPID - open source PID-controller. Part 1 - Main Board
    Circuits Automation MCU Open-Source Platforms Microcontrollers Usage Arduino
    PID stands for proportional-integral-derivative controller. This is a device used in control systems or simply to control other devices or other electronic systems. The main function of this controller is to help regulate or maintain the level of ...
    Mar 4, 2014
45. High-Performance, High-Accuracy 4-20 mA Current-Loop Transmitter Meets Toughest Industrial Requirements
    Circuits Automation Interfaces Radio Networks Application Notes Maxim DS8500 MAX15007 MAX5216 MAX6133 MAX9620
    Reference Design APP 5610 December 2013 Yuriy Kurtsevoy, Stuart Smith This reference design shows how to develop a high-performance, high-voltage 2- or 3-wire 4­20 mA current-loop transmitter suitable for industrial process control and smart ...
    Jan 3, 2014
46. Using STM32F30x/31x PWM shut-down features for motor control and digital power conversion
    Circuits Automation Microcontrollers Usage Power Application Notes STMicroelectronics STM32F301 STM32F302 STM32F303 STM32F313
    Application Note AN4277 November 2013 The purpose of this document is to describe STM32F30x/31x timer break feature and show how it can be used with other STM32F3 internal resources for over-current and over-voltage protection in applications such ...
    Dec 21, 2013
47. Distribution Automation and the Smart Grid: Coming of Age with a New Set of Challenges
    Circuits Automation Application Notes Maxim MAX11040K MAXQ1050
    Application Note 5689 November 2013 David Andeen The combination of aging electricity grid infrastructure and renewable portfolio standards present new challenges in the distribution automation space worldwide. In this application note, we review ...
    Dec 13, 2013
48. Adjust power-efficient LED switch to any light intensity
    Raju Baddi
    Circuits Automation Light
    You can use an LED as a photoelectric sensor. A previous Design Idea shows that such a switch is highly power-efficient, consuming almost no power ( Reference 1 ). However, you cannot adjust that configuration to switch at the desired light ...
    Jul 23, 2013
49. Linearize optical distance sensors with a voltage-to-frequency converter
    Jordan Dimitrov
    Circuits Automation Measurement Microcontrollers Usage
    Create the mathematical inverse of an analog voltage by converting it to frequency and measuring the period. A popular series of inexpensive distance sensors integrates an infrared emitting diode, a linear charge-coupled-device array, and a ...
    Feb 10, 2013
50. Automatic night-light feeds directly from the ac line
    Abel Raynus
    Circuits Automation Light
    There are many approaches to the problem of activating a light when it becomes dark, and a recent Design Idea covers this topic (Reference 1). Some approaches require a dc power supply and an electromechanical relay, but a better approach involves ...
    Jan 19, 2013