Ornamental festoon lamp driving system provided with driving protection circuit
A technology for driving protection circuits and driving systems, which is applied to the layout of electric lamp circuits, electric light sources, lighting devices, etc. It can solve the problems of damage to colored lights, failure to protect the operation of colored lights, and unsightly, so as to achieve good protection and avoid shocks Damage, the effect of ensuring aesthetics
Inactive Publication Date: 2016-09-28
CHENGDU YUEXIANGXIANG TECH CO LTD
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Problems solved by technology
However, the existing colored light drive system cannot protect the operation of the colored lights well, resulting in damage to the colored lights, making the original beautiful colored lights ugly due to individual damaged bulbs in the light string
Method used
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[0017] like figure 1 As shown, the decorative lantern driving system provided with a driving protection circuit includes a chip U2, a diode D6 whose P pole is connected to the STEP pin of the chip U2, and whose N pole is connected to the VDD pin of the chip U2, and the anode and the diode D6. The N pole of D6 is connected to the capacitor C9 with the negative pole grounded, wherein the model of the chip U2 is MT7920; it also includes an entrance processing circuit connected to the chip U2 after being connected to each other, a chip driving circuit, a secondary driving circuit, a driving output circuit and drive protection circuit.
[0018] The ingress processing circuit consists of diode bridge rectifier U1, capacitor C1, capacitor C2, and diode D1.
[0019] When connected, the P pole of the diode D1 is connected to the positive output terminal of the diode bridge rectifier U1, the N pole is grounded after passing through the capacitor C1, the negative pole of the capacitor C...
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The invention discloses an ornamental festoon lamp driving system provided with a driving protection circuit. The ornamental festoon lamp driving system comprises a chip U2, a diode D6 and a capacitor C9, wherein a P pole of the diode D6 is connected with a STEP pin of the chip U2, and an N pole of the diode D6 is connected with a VDD pin of the chip U2; an anode of the capacitor C9 is connected with the N pole of the diode D6, and a cathode of the capacitor C9 is grounded; and the model of the chip U2 is MT7920. The ornamental festoon lamp driving system also comprises an entrance processing circuit, a chip driving circuit, a two-stage driving circuit, a driving output circuit and a driving protection circuit which are mutually connected and then are connected with the chip U2. According to the ornamental festoon lamp driving system provided with the driving protection circuit provided by the invention, an ornamental festoon lamp can be protected well, so that the ornamental festoon lamp is not influenced by power-supply fluctuation during operation, the using service life the ornamental festoon lamp is greatly prolonged, the stability of the ornamental festoon lamp is greatly improved, and the using cost and maintenance frequency of the festoon lamp are reduced.
Description
technical field [0001] The invention belongs to the field of colored lamp driving, and specifically refers to a decorative colored lamp driving system provided with a driving protection circuit. Background technique [0002] In today's society, all kinds of colored lights can be seen everywhere on the street at night. The colored lights embellish people's lives more beautifully and cover the buildings at night with a beautiful "coat". However, the existing colored light driving system cannot well protect the operation of the colored lights, resulting in damage to the colored lights, making the original beautiful colored lights ugly due to individual damaged bulbs in the light string. Therefore, now a drive system is needed to complete the driving of the colored lights, so as to prevent the colored lights from being damaged by the fluctuation of the power supply when they are in use. Contents of the invention [0003] The purpose of the present invention is to overcome the...
Claims
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IPC IPC(8): H05B37/02
CPCH05B47/10
Inventor 不公告发明人
Owner CHENGDU YUEXIANGXIANG TECH CO LTD