What type of dimmer is known as reverse phase?

The type of dimmer known as reverse phase is the IGBT dimmer. IGBT stands for Insulated Gate Bipolar Transistor, which functions by controlling the power flow to the load. They operate by turning on during the latter part of the AC voltage cycle, effectively "chopping" the waveform. This technique allows for finer control and higher efficiency when dimming incandescent and LED lights.

IGBT dimmers are particularly advantageous for their ability to handle larger loads and to provide a smoother dimming curve compared to other methods. Additionally, they enhanced performance with low electrical noise and minimal flicker, especially significant in entertainment and theatrical applications. This capability makes IGBT dimmers versatile and suitable in environments where precision in lighting control is crucial.

In contrast, SCR/Triac dimmers operate using a different principle, controlling the power by switching on at a specific point in the AC cycle, but they do not inherently provide the same level of efficiency and performance as IGBT dimmers in reverse phase applications. Dimmer switches and analog dimmers do not fit the description of a reverse phase dimmer either, as their operation mechanics do not include this phase control element.