Thermal flasher
Car turn-signal flasher (bimetal) · 12 V · 2 × 21 W lamps · lamp current heats a bimetal strip that bends open, cools and closes again: about 1.5 flashes a second
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: Bimetal flasher
Pins
- B (battery)
- L (lamps)
Ratings and limits
| Load | 2 × 21 W at 12 V |
|---|---|
| Rate | ≈ 1.5 Hz |
How to use it
Lamp current heats a bimetal strip that bends and opens the contact; it cools, closes, repeats. One lamp out means too little current to heat it: the classic “fast or no flash” fault.