ABSTRACT
The a.c. mains supply often has to be changed to d.c. before it can be used. Remember
An alternating current (a.c.) keeps changing direction.
A direct current (d.c.) flows the same way all the time.
The a.c. mains supply often has to be changed to d.c. before it can be used. Remember
An alternating current (a.c.) keeps changing direction.
A direct current (d.c.) flows the same way all the time.