Hi

We are electronics engg students implementing a control project. WE have to control a bulb and a fan tjrough a 8051. We have the circuit to control the bulb through a relay. BUT HOW to control a FAn with INTENSITY CONTROL . Must we use Triacs. If then, how to control it-- by firing angle control or what. Please help us with your ideas and circuits and program ideas

Thanking you
Jim Cherian
INDIA