When the relay is actuated, automatically the circuit reduces the current supplied by the voltage source to minimize power dissipation. This was done by having an RC circuit connected to a schmitt inverter, by the time the capacitor charges to V and the inverter changes from high to low, the relay has been actuated. Resulting to a lower Ib, that will control the current through the relay. The logic source indicates the output state of the microcontroller to relay.
