Electronic Low Voltage. A transistorized http://www.controlbooth.com/forums/glossary/8581-dimmer-reverse-phase-control.html, for controlling electronic low voltage transformers and dimmable LED power supplies.
Information from Lutron: AP#19: Guide to Low-Voltage Dimming.
Information from ETC: Dimming Technologies: Choosing the Right Dimmer for Your Application
See also these threads:
http://www.controlbooth.com/forums/lighting/10694-philips-ew-downlight-sm-houselights.html;
http://www.controlbooth.com/forums/lighting/10859-replacing-house-lights.html.
Information from Lutron: AP#19: Guide to Low-Voltage Dimming.
Information from ETC: Dimming Technologies: Choosing the Right Dimmer for Your Application
See also these threads:
http://www.controlbooth.com/forums/lighting/10694-philips-ew-downlight-sm-houselights.html;
http://www.controlbooth.com/forums/lighting/10859-replacing-house-lights.html.