A lighting system for a halogen lamp in a duplicating machine专利检索-卤素灯白炽灯光源手电筒灯光专利检索查询-专利查询网

A lighting system for a halogen lamp in a duplicating machine

阅读：738发布：2023-05-02

专利汇可以提供A lighting system for a halogen lamp in a duplicating machine专利检索，专利查询，专利分析的服务。并且A halogen exposure lamp in a copying machine is controlled to provide a voltage less than the rated voltage for preheating the halogen lamp and is periodically energized with a voltage in excess of its rated voltage for exposing an original. The halogen lamp can be controlled by connecting additional voltage sources to the lamp or by controlling the conductive phase angle of the effective voltage applied to the lamp.，下面是A lighting system for a halogen lamp in a duplicating machine专利的具体信息内容。

权利要求

1. A lighting system for a halogen lamp in an electronic copying machine, comprising: a halogen lamp; an AC electric power source for generating an effective voltage higher by 10 to 300 percent than the rated voltage of said halogen lamp; means for changing the conductive phase angle of the power applied to said halogen lamp; and means for selecting the conductive phase angle of said means for changing the conductive phase angle between a conductive phase angle for applying an effective voltage to said halogen lamp lower than the rated voltage thereof to preheat said halogen lamp for maintaining the halogen cycle thereof and a conductive phase angle for applying an effective voltage higher by 10 to 300 percent than the rated voltage thereof to light said halogen lamp for 0.1 to 2 seconds.

2. A lighting system as in claim 1, wherein said means for changing the conductive phase angle includes a silicon control rectifier.

3. A lighting system as in claim 1, wherein said means for changing the conductive phase angle includes a Thyristor.

4. A lighting system as in claim 1, wherein said means for changing the conductive phase angle includes a controlled gate, and said means for selecting the conductive phase angle includes a resistor and a rectifier connected in parallel with each other and serially connected to said electric power source and said halogen lamp, a capacitor for applying a charged voltage to said gate, and a change-over switch for selectively connecting said gate to said capacitor.

5. A lighting system as in claim 1, wherein said means for changing the conductive phase angle includes a controlled gate, and said means for selecting the conductive phase angle includes a fixed resistor and a variable resistor connected in parallel with each other and serially connected to said electric power source and said halogen lamp, a capacitor for applying a charged voltage to said gate, and a change-over switch for selectively connecting said capacitor to said gate.

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A lighting system for a halogen lamp in a duplicating machine

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