RS PRO 20 → 70W Lighting Transformer, 220 → 240V ac, 11.6V ac
Technical Document
Specifications
Brand
RS ProPrimary Voltage Rating
220 → 240V ac
Secondary Voltage Rating
11.6V ac
Power Rating
20 → 70W
Dimensions
56 x 56 x 22 mm
Length
56 mm
Width
56 mm
Depth
22 mm
Minimum Load Requirement
20W
Maximum Temperature
+80°C
Type
Electronic
Number of Phases
1
Termination Type
Screw
Primary Current Rating
0.46A
Product details
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.
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P.O.A.
1
Technical Document
Specifications
Brand
RS ProPrimary Voltage Rating
220 → 240V ac
Secondary Voltage Rating
11.6V ac
Power Rating
20 → 70W
Dimensions
56 x 56 x 22 mm
Length
56 mm
Width
56 mm
Depth
22 mm
Minimum Load Requirement
20W
Maximum Temperature
+80°C
Type
Electronic
Number of Phases
1
Termination Type
Screw
Primary Current Rating
0.46A
Product details
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.