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optocoupler

  1. Lin4Fun

    IFC Engine- & enviroment analog sensordata to NME2000 bus through Teensy3.6 (marine application)

    Hello, I am working on a DIY project to interface a lot of signals to a NMEA2000 bus to be able to controle an older analog engine and other sensors with a new multi function display. To do so I am using Arduino / Teensy microcontroller together with a NMEA2K library. I started to design the...
  2. E

    120 VAC voltage detection

    I'm working with a system that requires me to read 120VAC inputs on a pivot irrigation system. The wires travel 1/4 of a mile. Occasionally on the line I am reading, the voltage is 65VAC instead of 120VAC. I believe this is an induced voltage because of the length of the wires. I only want to...
  3. R

    The applications of base connection in 4N25 opto-coupler

    Hi, Some opto-couplers, like 4N25, have a terminal for the base of the output device, what are the advantages of having this terminal? Looking for an answer, I ran into this. I can somehow understand that the base connection can increase the speed but I don't understand how this terminal can be...
  4. D

    Triac Blowing

    Good Afternoon I am busy building a static VAR compensator for a project and i need to use TRIACS to switch in my capacitor banks. The system is 3 phase 400 VAC and consists of 3 motors with varying loads. There is a system that determines the power factor and switches in the capacitors. Today...
  5. StudentSA

    Optocoupled Triac Help

    Good Day, I am really struggling to get a "simple" Triac circuit to work. I started by consulting the typical application from the optocoupler MOC3043 datasheet: I chose the MOC3043M as is was suggested for 240Vac operation and had the lowest "turn-on" current (5ma). I've constructed the...

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