you’re not someone who’s particular about the electronics you’re
using, you wouldn’t know there are different types of power
supplies. These power supplies differ in how they work which
determines their size, efficiency and noise level. In the market
today, there are basically two: the switching power supply and the
linear power supply.
of these two has its own following industries that find their favored
power supply ideal for their environment. While switching power
supply often has the manufacturing, mobile station, aviation and
marine as frequent users, linear
power supplies are often used in the
applications within communication, medical and laboratory.
linear power supply uses larger transformers converting Alternating
Current (AC) line voltage into Direct Current (DC) before sending the
power to the regulation circuit. Switching power supply converts AC
line voltage into DC without using a transformer because it goes
through an Integrated Circuit and becomes high-frequency DC before
going to the regulation circuit.
advantages of a switching power supply enable the unit to come in a
smaller size, lighter in weight and be more efficient. It’s
actually 80% efficient. While linear supply would be more silent and
runs with the faster transient response time. It also tends to be
more flexible in application.
supply runs with a high-frequency noise level with a greater ripple.
Linear supply is much larger in size and heavier because of the
built-in transformer. It runs only at 60% efficiency.
are the considerations users and buyers need to take when choosing
between the two power supplies.