As today world completely depends on the power saving, this prototype will help to decrease the power consumption. Here we are using this circuit for today's world to control AC 60W bulb using 8-bit microcontroller and we are using the concept of pwm (pulse width modulation) technique to control the 60W load by which we can decrease the light intensity and thus power consumption of the load indirectly got decreased. The concept is very low such as to decrease the intensity we need to decrease the voltage of AC input. Here we are using a controlling part which consists of a TRIAC to control the AC voltage and also other feature is controlling the frequency of the signal. Keep on reading to find out how the circuit is assembled and put to use.