Global-tech offers a wide range of compact switch mode power supplies [single phase as well as three phase], from muff elektronik gmbh, germany. In these power supplies, the input voltage is rectified, smoothed and converted to high frequency ac. This is further transformed to a lower voltage by a small and highly efficient ferrite cored transformer, and further stabilized. The advantages are high power to size and weight ratios. Following combinations are available in these power supplies: single phase - 1] input: 96-265 v ac, output: 24 v dc/3 a, 5 a, 10 a, 20 a; and2] input : 185-265 v ac, output : 24 v dc/10 a, 20 a; three phase - 1] input: 340-460 v ac, output: 24 v dc/10 a, 20 a; and 2] input : 360-550 v ac, output: 24 v dc/10 a, 20 a, 40 a.
