Circuit arrangement for operating a low-power lighting unit and method of operating the same
First Claim
1. A Circuit arrangement for operating at least one low-power lighting unit with a self-oscillating power supply, the self-oscillating power supply having a primary side for connection to a power source and a secondary side for connection to the circuit arrangement, the circuit arrangement comprising:
- an input for receiving an operating voltage from said self-oscillating power supply at the secondary side of the self-oscillating power supply,an output for connection to one or more low-power lighting units,a pulse generator, connected with said secondary side of said self self-oscillating power supply and configured to inject at least one trigger pulse into the secondary side of said self-oscillating power supply during operation anda pulse controller, connected at least with said pulse generator and configured to control said pulse generator in dependence of said operating voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
A circuit arrangement (3) is provided for operating at least one low-power lighting unit with a power supply (4) and in particular with a self-oscillating power supply. The circuit arrangement (3) comprises at least an input (12) for receiving an operating voltage (28) from said power supply (4) and an output (11) for connection to one or more low-power lighting units. To allow an efficient operation of said low-power lighting unit with the power supply (4), the circuit (3) comprises a pulse generator (17), connected with said input (12) and adapted to inject at least one trigger pulse (40a, 40b) into said power supply (4) during operation.
8 Citations
16 Claims
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1. A Circuit arrangement for operating at least one low-power lighting unit with a self-oscillating power supply, the self-oscillating power supply having a primary side for connection to a power source and a secondary side for connection to the circuit arrangement, the circuit arrangement comprising:
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an input for receiving an operating voltage from said self-oscillating power supply at the secondary side of the self-oscillating power supply, an output for connection to one or more low-power lighting units, a pulse generator, connected with said secondary side of said self self-oscillating power supply and configured to inject at least one trigger pulse into the secondary side of said self-oscillating power supply during operation and a pulse controller, connected at least with said pulse generator and configured to control said pulse generator in dependence of said operating voltage. - View Dependent Claims (2, 3, 9, 10, 11, 12, 13, 15)
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4. The Circuit arrangement for operating at least one low-power lighting unit with a self-oscillating power supply, the self-oscillating power supply having a primary side for connection to a power source and a secondary side for connection to the circuit arrangement, the circuit arrangement comprising:
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an input for receiving an operating voltage from said self-oscillating power supply at the secondary side of the self-oscillating power supply, an output for connection to one or more low-power lighting units, a pulse generator, connected with said secondary side of said self-oscillating power supply and configured to inject at least one trigger pulse into the secondary side of said self-oscillating power supply during operation and a pulse controller, connected at least with said pulse generator and configured to control said pulse generator in dependence of said operating voltage, further comprising an envelope detector, connected with said input and said pulse controller and configured to determine of an envelope component of said operating voltage, wherein said pulse controller is configured to control said pulse generator, so that at least one trigger pulse is injected into said self-oscillating power supply in each cycle of said envelope component. - View Dependent Claims (5, 6, 7, 8)
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14. A Method of operating at least one low-power lighting unit with a circuit arrangement, the method comprising;
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receiving an operating voltage from a self-oscillating power supply at an input of the circuit arrangement, the self-oscillating power supply having a primary side for connection to a power source and a secondary side for connection to the circuit arrangement, connecting one or more low-power lighting units to an output of the circuit arrangement, connecting a pulse generator with said secondary side of aid self-oscillating power supply, and connecting a pulse controller with said pulse generator, injecting at least one trigger pulse into the secondary side during operation, and controlling said pulse generator in dependence of said operating voltage. - View Dependent Claims (16)
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Specification