Switch mode power supplies offer several significant advantages over traditional linear transformer power supplies. They are far more efficient than their linear counterparts. As they do not use power or mains transformers the equivalent power supply weighs considerably less than traditional types. Physical size is also reduced. Though the power supplies are supplied in a vented steel cabinet they must be installed within a secondary earthed cabinet as the 240V input terminals are exposed.
Input
Input range: 90-264V AC
Frequency: 47-63Hz
In rush current: 30A typical cold start
Efficiency: 65-80% at full load
Line regulation: ±0.5%
Output
Max power: 40W
Output current: 1.66A
Ripple/noise: ±1% max
Dimensions: 129W x 98D x 38H mm