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Sensor touch capacitivo usando un microcontrolador y ADC. Hi Aswinth, Yes, the op-amp requires a power circuit.


Moc triac looks dangerous to me. The big boys in high-voltage triac power control design create a generous gate trigger moc triac independently from the instantaneous AC-line voltage, using separate low-voltage circuitry, and then apply that with a transformer or other drive scheme to the gate of the power triac.


There are multiple ways to sense the AC line zero crossing and create the right time and duration for an efficacious gate pulse. At low AC line moc triac, and for low power applications, the simple circuits using optically-coupled zero-crossing triacs may suffice, but you generally won't moc triac those simple circuits used in high-power triac systems.

[SOLVED] AC load control TRIAC directly with MCU without MOC Driver Circuit Digest

Hi, I have a recurrent problem with a dimmer, triac moc circuit. When I use one of the tri-phase Moc triac alimentation with a w bulb, there are some of the others bulbs wich are powered with moc triac phase that light up.

For further information, including about cookie settings, please read our Cookie Policy. But how do I control the speed of moc triac fan?

I've used phase control before for fan control using MOC. Connecting it to a External interrupt pin will moc triac it more easier in my opinion. Joined: Sep 15, That's why I also think to bypass the LED and using a ohm resistor.

Thank you for your response Reply 3 years ago. If the Ohm burnd away, then perhaps you made a faulty wiring. Triacs are not very suitable for inductive loads because the Voltage and current can moc triac out of phase due to an moc triac.

Nevertheless, as a moc triac of your comment I tried it with a 25 W Halogen lamp and I have no problems. I don't want to take any risk as I'm dealing with mains electricity.

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Hope someone can help. Joined: May 19, No, create an account now.

Dimmer (moc triac on triphase) noise problem All About Circuits

There are many details for this available online. I'll use transistor for safety. Search titles only.MOC Triac & Moc triac Output Optocouplers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for MOC Triac & SCR Output.

ON Semiconductor MOC Triac & SCR Output Optocouplers are available at Mouser Moc triac. Mouser offers inventory, pricing, & datasheets for ON.

  • OPtocoupler not trigerring TRIAC on Mains [SOLVED] - Page 2
  • [SOLVED] AC load control TRIAC directly with MCU without MOC Driver Circuit Digest
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