LIGHTING CIRCUIT AND ILLUMINATION DEVICE
First Claim
1. A lighting circuit comprising:
- a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off;
a noise prevention circuit connected in parallel to the self-hold element; and
a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element.
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Accused Products
Abstract
A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply.
103 Citations
20 Claims
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1. A lighting circuit comprising:
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a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element. - View Dependent Claims (2, 3, 4, 15)
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5. An illumination device comprising:
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an input terminal; a rectifier circuit including an AC input end connected to the input terminal; an LED lighting circuit including an input end connected to DC output ends of the rectifier circuit; and a damping resistor configured to be connected to the DC output ends of the rectifier circuit only for a predetermined period at the start of application of each half wave of a power source voltage to the input terminal. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20)
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Specification