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triac

  1. A

    TRIAC burn out (half burn)

    Hi, In a dishwasher machine main board we have used 107NN0 TRIAC for controlling ac loads such as valves, pumps, dispenser, etc. In about 2 to 3 percent of products sold to customers, one of TRIACs that has a parallel RC equivalent load is half-burned (TRIAC is short-circuited in one direction)...
  2. B

    TRIAC self triggering

    Hi Guys, I would like to verify the value dV/dt for my triaca, which is a very critical value for self triggering. would you please advise how can i do that? Is is the rate of change of the voltage across MT1 and MT2? where should i take the value of the slope? thank you
  3. B

    Triac Gate sensitivity

    Hi Electronics Guys, I hope that you are all doing well, Among a validation plan of my triac, I need to perform a Gate sensitivity triggering test at some defined levels (triggering currents), would you please advise an appropriate circuit to do that? Thank you in advance
  4. O

    Triac BTA208S600D and BTA208S600F blinking or working unstable

    Hello! Please help me validate the electrical design and the set of the components. The goal is to create removable modules that could switch the different types of payload: 1. DC MosFET module - switching and PWM of the 9-56V with 4A 2. AC MosFET module - switching and dimming (front and...
  5. 1

    Motor Speed Controller

    Hello, I have an 125 mm angle grinder with 720 W AC motor and soft start (attached pdf document). I want to build a speed controller for this angle grinder. I tested a simple triac dimmer (from the attached jpg schematic) but it doesn't work normally, because it is making a strange buzzing...
  6. throbscottle

    What's going on here?

    Been having a clear out of old files, found this. I captured this bit of schematic when I dismantled an old money counting machine, years ago. It's the power supply to an induction motor which rotates the pick-up rotor. The motor is shown by L1, L2 and the circle. Triac D2 looks like a...
  7. V

    IR based Speed control of Single Phase AC motor using a Microcontroller 8051

    Hi all, My project is to create an infrared remote to change the speed and switch on/off of a cap start/run type single phase induction motor operating at AC mains (230V, 50Hz). I have worked out the controlling the speed of the motor part (using a solid state relay to control phase angle of...
    • Vedant Gala
    • Thread
    • 8051 infrared microcontroller motor triac
    • Replies: 0
    • Forum: 8051/8951
  8. 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...
  9. 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...
  10. Clarkdale44

    What are the alternatives i can use for SL100 Transistor and BT44 Triac?

    Hello I am thinking of building the below circuit but i am short on components. I have all the others except SL100 transistor and BT44 triac which i can't seem to find in any local store. If anyone can tell me what alternative components i can use for these two then please let me know i would...

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