Transformateur d'éclairage, Vin 230V c.a., Vout 11.5V, 20 → 70W

Mini-transformateur électronique réglable rond à sortie simple

Transformateur indépendant IP20 pour lampes halogènes de 12 V
Protection classe II contre les chocs électriques suivant des contacts directs et indirects
Le transformateur est fourni avec des câbles sur les circuits primaires et secondaires
Excellente fiabilité de fonctionnement à des températures très élevées (Ta = 45 °C ; Tc = 90 °C)
Modèle compact
Assemblage et installation faciles
Protégé contre la surchauffe, les courts-circuits, les pics de tension et les surcharges

Low Voltage Lighting Transformers

Dimming Methods (where applicable):
Leading Edge:
The control device is either a thyristor or triac which blocks power until they are switched on by the control signal. At that point the current flows almost instantaneously and continues to flow until the end of the half cycle of the mains waveform. When the signal reaches zero, the device turns off and no more current is passed until it is triggered again. Turning the power on and off in this manner averages out creating a constant intensity level and by altering the precise trigger point over a period of time the lamp can be dimmed.

Trailing Edge:
Since this method of dimming uses transistor technology it is not limited to just switching, therefore current can be controlled gradually. Transistors can be programmed to pass current at the start of each half cycle, and gradually switch off later. This will control the full amount of power reaching the lamp without the side effects of a step increase in current.