Power supply circuit for LED lighting
AssigneeSelf Electronics Co., Ltd.
InventorsQiming Wang, Guanghua Wu
Life of this patent
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Abstract
An angle adjustment mechanism for LED bar lighting includes a lamp body, two end covers arranged two ends of the lamp body along an axial direction thereof, two lamp frames respectively mounted on the two threading pipes, two wheel gears respectively fixed on the two lamp frames, two outer end caps fixed and covered on the two end covers, respectively, and at least two stopping plates respectively received in the two lamp frames. Each of the two end covers includes a threading pipe extending along the axial direction of the lamp body. Each of the two wheel gears includes a plurality of gear teeth taken along a radial direction thereof and rotating around the threading pipe. Each of the stopping plates provides at least one stopping tooth which is coupling to the gear teeth.
Claims9
A power supply circuit for LED lighting, comprising:
- an LED power prime circuit (10);
- a load (20) electrically connected to output terminals of the LED power prime circuit (10);
- a short circuit protection switch module (30) electrically connected between the LED power prime circuit (10) and the load (20), the short circuit protection switch module (30) comprising a load switch (301) configured for turning on or turning off the load (20);
- a circuit detecting module (40) electrically connected to the short circuit protection switch module (30), the circuit detecting module (40) comprising a comparing detecting unit (41), and a time delay unit (42), the comparing detecting unit (41) comparing the output voltage of the LED power prime circuit (10) and a predetermined reference voltage and outputting a controlling signal according to the comparison result, the time delay unit (42) outputting a switch control signal after a delay time for a predetermined time in accordance with a control signal of the comparing detecting unit (41);
- and
- a controlling switch module (50) configured for turning on or turning off the load switch (301) in accordance with the switch control signal outputted by the time delay unit (42) so as to turn on or turn off the power supply for the load (20).
Dependencies are inferred from the claim text.