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Alternating-current voltage regulation circuit for multimedia projector

An AC voltage regulation and projector technology, which is applied to the arrangement of electric lamp circuits, electric light sources, lighting devices, etc., can solve the problems of unfavorable popularization, high production cost, and unstable projection, and achieve stable light, low production cost, high production cost, etc. The effect of popularizing the value of promotion

Inactive Publication Date: 2015-06-03
CHENGDU FANTASEA SOFTWARE
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AI Technical Summary

Problems solved by technology

[0002] Multimedia is the combination of computer and video technology, including two media of image and sound. A projector is a necessary equipment for multimedia. In recent years, with the development of projector technology and the enrichment of people's entertainment life, home projectors are becoming the focus of users. The mainstream of projectors has occupied a certain market share. Due to the improvement of the portable performance of projector products, it can get rid of the traditional and bulky image. It can be used with laptops to form the best partner for business presentations. However, the projectors currently on the market generally have insufficient projection stability. The production cost is relatively high, which is not conducive to its popularization and promotion

Method used

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  • Alternating-current voltage regulation circuit for multimedia projector

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing:

[0011] Such as figure 1 As shown, the present invention includes a projection lamp L, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first resistor R1, a second resistor R2, a third resistor Resistor R3, fourth resistor R4, fifth resistor R5, first triode VT1, second triode VT2, third triode VT3, unijunction transistor VT4, thyristor VT5 and capacitor C, the first triode of projection lamp L One end is connected to the phase line end of the AC power supply, the second end of the projection lamp L is simultaneously connected to the cathode of the first diode D1 and the anode of the second diode D2, and the anode of the first diode D1 is connected to the anode of the second diode D1 at the same time. The anode of the three diodes D3, the first end of the second resistor R2, the first end of the third resistor R3, the emitter of the third triode V...

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Abstract

The invention discloses an alternating-current voltage regulation circuit for a multimedia projector. The alternating-current voltage regulation circuit for the multimedia projector comprises a projection lamp, a first diode, a second diode, a third diode, a fourth diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first triode, a second triode, a third triode, a unijunction transistor, a thyristor and a capacitor. Compared with the prior art, the alternating-current voltage regulation circuit for the multimedia projector adopts the phototriodes to control the thyristor to automatically regulate voltage, so that the light of the projector can be stabilized sufficiently, and the circuit is simpler in structure and lower in manufacturing cost, and has higher popularization and promotion values.

Description

technical field [0001] The invention relates to an AC voltage regulating circuit, in particular to an AC voltage regulating circuit for a multimedia projector. Background technique [0002] Multimedia is the combination of computer and video technology, including two media of image and sound. A projector is a necessary equipment for multimedia. In recent years, with the development of projector technology and the enrichment of people's entertainment life, home projectors are becoming the focus of users. The mainstream of projectors has occupied a certain market share. Due to the improvement of the portable performance of projector products, it can get rid of the traditional and bulky image. It can be used with laptops to form the best partner for business presentations. However, the projectors currently on the market generally have insufficient projection stability. The production cost is higher, which is unfavorable for its popularization and promotion. Contents of the in...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 段学军
Owner CHENGDU FANTASEA SOFTWARE
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