opto-coupler

  1. W

    Speed measurement of a small DC motor using myDAQ and LabVIEW

    Hey guys I'm trying to measure the speed of a small DC motor using a rotary encoder and an OPTO sensor, and counter input on myDAQ. Here's my circuit on the breadboard. The Collector pin of the transistor is connected to the DIO1 port of the myDAQ. And here's the LabVIEW code. On the...
  2. Doktor Jones

    Using a zener to protect a MOSFET?

    I'm looking to use an optocoupler+MOSFET to switch "undefined" DC power sources; the opto I'm looking at is FOD817D and the MOSFET is FDPF55N06. The power sources may range from 5V (USB power) to 24V, but I could see this being used to switch as high as 36V at some point in the future, and...
  3. flaviodsilva

    Motor control using MOC3041 optocoupler

    I'm currently doing my master thesis, and I'm now at a point where I have to control a few AC motors with a microcontroller. From my previous study about the subject, and from previous similar thesis, I've noticed a common practice is to use an optocoupler to separate low voltage from high...
  4. Neddan

    Increasing capable SMPS from rated 12V ouput to 20V via opto-coupler feedback

    Hello everybody. I am trying to increase my power Supply's default 12V 3.3A output to something like 20V 3A. I Decided to use a potential resistor via the shunt regulator at the opto-coupler which i was sure it had. But the problem is that when i opened the power supply, most of the output...
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