100 is connected to ac power source 102 which is 120 vac in the united states however the invention is not restricted to any particular ac power source voltage ac power dimmer module 104 is shown connected in series with ac power source 102 in this block diagram although dimmer module 104 may be connected in a different manner depending upon the type of dimmer module as discussed below either way ac power dimmer module 104 provides a dimmable ac power signal to the two input terminals 106 amp 108 of led light fixture 100 as known in the art an ac power dimmer module is typically coupled in series with an ac power source as shown in fig1 generally there are different classes of dimmer operation phase dimming analog dimming and digital dimming with phase dimming the most prevalent type in residential lighting is forward phase dimming also known as leading edge phase dimming since it only requires two ac wires the other type of phase dimming reverse phase dimming also known as trailing edge phase dimming requires three wires to the dimmer either way led drivers are available to convert the ac phase dimmable power to dc power analog dimmers such as 0 to 10 vdc dimmers.