Discussion Overview
The discussion revolves around the optimal method for turning off a triac used to control mains power through an opto-isolator. Participants explore various approaches and concepts related to solid state relays, triac operation, and circuit design, without reaching a consensus on the best solution.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant seeks advice on how to turn off a triac without using relays or BJTs, indicating a need for a solid state solution.
- Another participant suggests searching for "triac light switch" images to find relevant circuit designs.
- A different participant shares a datasheet link for the MOC3020, questioning its current rating in relation to their requirement of 15 amps.
- One participant emphasizes the importance of not withholding information in the original post and refers to specific figures in the datasheet that may illustrate the necessary circuit design.
- Another participant expresses skepticism about the relevance of the figures mentioned, stating that they are not looking for half conduction and are concerned about the challenges of turning off the triac.
- A later reply clarifies that triacs are bidirectional and turn off automatically when the drive is removed, but notes that a commutating circuit is needed to turn them off mid-cycle.
Areas of Agreement / Disagreement
Participants express differing views on the operation of triacs and the methods for turning them off. There is no consensus on the best approach, and some participants challenge each other's understanding of triac functionality.
Contextual Notes
There are unresolved questions regarding the specific requirements for the circuit design, including the need for high current handling and the implications of turning off a triac mid-cycle. Participants reference datasheets and tutorials, but the relevance and applicability of these resources remain debated.
