week 7 :research about the function relay (26/3/2014)

Title         : :research about the function relay.

Objective  : 1) to know the function and system of relay.

                 2) to explore the usage application and capability of relay.

Content    : 1) look in Wikipedia about the relay

                  2) the application of the relay is found to be place in the circuit.

                  3) look for data sheet.

                  4) look for availability in Malaysia.

                  5) relay are used where it is necessary to control a circuit by a low- power                             signal(with complete electric isolation between control and controlled                               circuits), or where several circuits must be controlled by one signal.

                  6) relay control power circuit with no moving  parts, incited using a                                       semiconductor device to perform switching.

                  7) this is relay and circuit relay