| 摘要 |
FIELD: electricity.SUBSTANCE: invention relates to lighting engineering. The voltage divider scheme (1) intended for combination of a dimmer (2) with phase control and LED scheme (3) comprises an active circuit (4) to increase a number of variants. The active circuit (4) may contain a current-limit circuit (5) in order to limit current passing through the voltage divider scheme (1). The active circuit (4) may comprise a voltage detection circuit (6) for deactivation or deactivation in response to detection of the current-limit circuit (5) and may comprise a control circuit such as microprocessor chip (7) intended to control the current-limit circuit (5) and may contain a control circuit (9) intended to control use of data received from the current passing through the LED scheme (3) intended to control the current-limit circuit (5) and to control at least a part of the LED scheme (3) containing back-to-back LEDs (31-32) or in-series LEDs and/or parallel LEDs (33-36).EFFECT: reduced power losses.15 cl, 8 dwg |
