TRIAC-dat
- compare to - SSR-relay-dat
Demo
https://t.me/electrodragon3/198
intro of triac
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.
Key points about TRIAC:
- 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.
- 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.
- Applications: TRIACs are commonly used in light dimmers, motor speed controls, and other devices where AC power needs to be modulated.
In short, a TRIAC is a specific type of thyristor designed for efficient AC power control.
TRIAC
https://www.electrodragon.com/w/Category:TRIAC
chips
- BT136 DS - https://www.mouser.com/datasheet/2/848/bt136-600e-1520534.pdf
- BTA16 DS - https://www.mouser.com/datasheet/2/848/BTA16-600B-1375641.pdf
demos
- arduino control with large triac - https://t.me/electrodragon3/198
- arduino control SCU1041-dat - https://t.me/electrodragon3/185
thyristor = 可控硅
It is a type of semiconductor device used for controlling high-power electric signals, often in switching applications.
MOC Triac driver
| Feature | MOC3020 (Random-Phase) | MOC3021 (Random-Phase) | MOC3063 (Zero-Cross) |
|---|---|---|---|
| Triggering Behavior | Random-phase (non–zero–cross); triggers at any point in AC cycle | Random-phase (non–zero–cross); similar to MOC3020 but optimized for lower LED drive | Zero–cross; triggers only near the AC waveform’s zero point, reducing EMI and inrush current |
| LED Trigger Current | Typical trigger current ~30 mA | Typical trigger current ~15 mA | Optimized for zero–cross operation (exact value varies per datasheet) |
| Applications | Phase–control applications (lamp dimmers, motor controls) | Phase–control applications where a lower drive current is desired | AC switching (solid state relays, noise reduction, on/off control) |
| Isolation Voltage | 5,000 Vrms | 5,000 Vrms | 5,000 Vrms |
| Off-State Output Voltage | Minimum 400 V | Minimum 400 V | Minimum 400 V |
| dV/dt Rating | Typically ≥1000 V/µs | Typically ≥1000 V/µs | May be optimized for zero–cross switching (check datasheet for specifics) |