LIGHTING APPARATUS AND METHODS USING SWITCHED ENERGY STORAGE

摘要

A lighting apparatus includes a string of serially-connected light-emitting devices including at least a first segment and a second segment and a control circuit configured to control a relationship of light outputs of the first segment and the second segment by diverting current from a node of the string to at least one energy storage device and subsequently transferring energy from the at least one energy storage device to at least the first segment. The control circuit may be configured to divert the current responsive to a control input, such as a temperature and/or a dimming level. The at least one energy storage device may include at least one inductor. In some embodiments, the control circuit may control at least one color characteristic of light produced by the string.

主权项

1. A lighting apparatus comprising:
a string of serially-connected light-emitting devices comprising first and second segments; at least one inductor; and a control circuit configured to selectively divert current from the first segment to charge the at least one inductor while at least partially bypassing the second segment and to discharge the charged at least one inductor through at least the first segment.