Tech-dat/actuator-dat/TRIAC-dat/TRIAC-dat.md
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# TRIAC-dat
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+- compare to - [[SSR-relay-dat]]
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+
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## Demo
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https://t.me/electrodragon3/198
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+## intro of triac
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+
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+A TRIAC (Triode for Alternating Current) is a type of semiconductor device that is used to control the flow of electrical power. It is essentially a bidirectional thyristor, meaning it can conduct current in both directions when triggered, making it particularly useful for AC (alternating current) applications.
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+### Key points about TRIAC:
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+- Bidirectional: Unlike a regular thyristor (which only conducts in one direction), a TRIAC can control the current flow in both directions, making it ideal for AC power control.
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+- Triggering: It can be triggered by a small current applied to its gate, after which it allows current to pass through it until the current drops below a certain threshold.
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+- Applications: TRIACs are commonly used in light dimmers, motor speed controls, and other devices where AC power needs to be modulated.
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+In short, a TRIAC is a specific type of thyristor designed for efficient AC power control.
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# TRIAC
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- arduino control [[SCU1041-dat]] - https://t.me/electrodragon3/185
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+## thyristor = 可控硅
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+It is a type of semiconductor device used for controlling high-power electric signals, often in switching applications.
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Tech-dat/actuator-dat/actuator-dat.md
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# actuator
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+
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+
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- [[TRIAC-dat]]
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-- [[relay-dat]]
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+- [[relay-dat]] - [[SSR-relay-dat]]
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- [[servo-dat]]
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Tech-dat/actuator-dat/relay-dat/SSR-relay-dat/SSR-relay-dat.md
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# SSR-relay-dat
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+## drawbacks of the SSR relay
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+
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+While SSRs offer numerous advantages over mechanical relays, they also have some drawbacks:
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+- Temperature Sensitivity: SSRs can be sensitive to high temperatures, which can affect their performance and lifespan. Operating them within their specified temperature range is crucial.
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+- Turn-on Surge Current: SSRs can draw a large surge current during turn-on, which can cause voltage drops in the power supply or damage sensitive loads. This can be mitigated by using surge suppressors or soft-start circuits.
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+- Higher Cost: SSRs are generally more expensive than mechanical relays, especially for high-current applications.
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+- Limited Current and Voltage Ratings: SSRs have limitations on the maximum current and voltage they can handle. Exceeding these limits can lead to damage or failure.
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+- Susceptibility to Transient Voltages: SSRs can be sensitive to transient voltages, which can cause premature failure. Proper shielding and grounding can help protect them from these transients.
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+- Potential for Latching: In some cases, SSRs can latch on or off, making it difficult to control their state. This can be prevented by using appropriate drive circuits and control methods.
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+
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+
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+## standalone type SSR relay
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+
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![](2024-09-13-14-54-46.png)
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+
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+## PCB Type of SSR relay
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+
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output - 2A/240V
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![](2024-09-14-19-36-02.png)
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![](2024-09-14-19-36-49.png)
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+## SSR VS TRIAC
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+
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+| Feature | TRIAC | Solid State Relay (SSR) |
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+| --------------- | ------------------------------------------ | --------------------------------------------- |
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+| Basic Function | AC power control through triggering | Switching AC or DC loads with isolation |
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+| Structure | Single semiconductor device | Complete isolated switching unit |
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+| Triggering | Directly through gate terminal | Low-voltage control signal (AC or DC) |
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+| Isolation | No inherent isolation | Opto-isolation between control and load sides |
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+| Switching Speed | Fast but can be noisy with inductive loads | Fast, smooth, and silent switching |
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+| Durability | Moderate (affected by wear and tear) | High (no mechanical parts) |
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+| Applications | Light dimming, motor control, heaters | Industrial automation, temperature control |
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+| Cost | Lower | Higher, but with added features |
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+
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+
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+### Choosing Guide:
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+- If **safety** and **isolation** are critical (e.g., in industrial environments or sensitive electronics), an SSR is usually the better choice.
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+- For **simple AC power control** and **cost-sensitive applications**, especially where isolation isn't a concern, a TRIAC will suffice.
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+- If you’re dealing with **high-frequency switching, inductive loads**, or need reliable performance in harsh environments, an SSR would be preferable.
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+- For **microcontroller-based projects** that require easy, safe switching, go with an SSR due to its ease of interfacing and built-in isolation.
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+In summary:
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+- **Choose TRIAC** if you need basic AC control, minimal cost, and don't require isolation.
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+- **Choose SSR** if you need isolation, durability, fast switching, or you’re controlling sensitive systems or loads frequently.
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+
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## ref
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- [[relay]]
Tech-dat/actuator-dat/relay-dat/relay-dat.md
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- [[songle-dat]] - [[hongfa-dat]]
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+- [[SSR-relay-dat]]
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## ref
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Tech-dat/power-dat/battery-dat/18650-dat/18650-dat.md
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- [[battery-protection-dat]]
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+## CID safety
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+The CID (Current Interrupt Device) in an 18650 battery is a safety feature designed to prevent overheating and potential hazards. If the internal pressure of the battery gets too high (usually due to overcharging or overheating), the CID disconnects the circuit, stopping the current flow to prevent a dangerous situation, such as thermal runaway or explosion.
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+Each manufacturer might have slightly different specifications, but the CID is a common safety component in lithium-ion batteries, especially in high-capacity cells like the 18650.
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+## CID reset trick
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+- https://www.youtube.com/watch?v=IhUtKvCV6fs&ab_channel=WalamusPrime
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+## short test
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+- https://www.youtube.com/watch?v=bKQzfrO6WBA&ab_channel=EngineerX
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+- https://www.youtube.com/watch?v=AUMiSk1D4Xg&ab_channel=DIYTech%26Repairs
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+
Tech-dat/power-dat/battery-dat/battery-dat.md
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Both button cells provide very low discharge rate that can work for 1-3 years.
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+## safest battery - Lithium Iron Phosphate (LiFePO4)
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+The safest batteries to use, especially in terms of preventing fires or explosions, are Lithium Iron Phosphate (LiFePO4) batteries. They are known for their thermal and chemical stability compared to other lithium-ion batteries. Here are some key points about them:
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+Safety: LiFePO4 batteries are less likely to overheat, catch fire, or explode because of their higher thermal runaway threshold. They also have better stability during overcharging and short-circuit conditions.
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+Longer lifespan: These batteries tend to last longer than other types, reducing the need for frequent replacements.
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+Stable chemistry: Their chemical structure is more resistant to thermal changes, which makes them safer even in extreme conditions.
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+- LiFePO4 - https://www.youtube.com/watch?v=07BS6QY3wI8&ab_channel=HighTechLab
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## Power battery
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![](2023-11-08-16-40-20.png)
Tech-dat/tech-dat.md
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- [[PIR-sensor-dat]]
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-- [[actuator-dat]]
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+- [[actuator-dat]] - [[relay-dat]]
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### Interface
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