figure 1-13D). In addition to the symbol, transformers are generally
labeled by the letter "T."
d. Power Supplies.
true power source.
They generally take an input from an external,
power source and convert that source to usable voltages to operate
the circuits they supply. Typically, a power supply will convert an
AC input into one or more DC outputs. Most power supplies consist of
four basic sections: a transformer; a rectifier; a filter; and a
supply and the effects of the basic components.
Basic Power Supply.
output voltages. Depending on the complexity of the circuit demand,
Often the power supply for a circuit will require a separate
schematic diagram to illustrate the components and functional
Figure 1-15 illustrates a schematic
of a simple power supply.
Power supplies are labeled with the
letters "PS." the