A Dimming Control Circuit for Eliminating Interference at the Control Signal Terminal
A dimming control circuit and control signal technology, which is applied in the direction of electric lamp circuit layout, light source, electric light source, etc., can solve the problems that the control signal cannot be received normally, the conversion signal input is unstable, and the internal resistance cannot be ignored.
Active Publication Date: 2017-06-06
上海航铠电子科技有限公司
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Problems solved by technology
[0003] The purpose of this invention is to solve the problem in the prior art that the internal resistance cannot be ignored and the control signal cannot be received normally because the cable connected to the light box is too long, and a new type of dimming control that eliminates the interference of the control signal terminal is proposed. circuit, eliminating the hidden dangers caused by unstable "day / night" conversion signal input
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[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0013] See figure 1 , figure 1 A dimming control circuit that eliminates interference at the control signal terminal is shown, including: power supply input terminal VCC, control signal terminal RY, three-terminal voltage regulator CW117 (CW117HV is an integrated voltage regulator with adjustable positive voltage output, allowing Higher input voltage, most suitable for this circuit) and external output terminal OUTPUT, wherein, the three-terminal voltage regulator CW117 has a voltage input terminal Vin for connecting with the power supply input terminal VCC; a voltage output terminal Vout, It is used for connecting with the external output terminal OUTPUT; and a signal receiving terminal ADJ is used for receiving the switching signal sent by the control signal terminal RY.
[0014] The power supply input terminal VCC is connected to the first termin...
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The invention discloses a light adjustment control circuit capable of eliminating interference of a control signal end. The light adjustment control circuit capable of eliminating the interference of the control signal end comprises a power supply input end, a control signal end, a three-terminal regulator and an external output end, wherein the three-terminal regulator is provided with a voltage input end, a voltage output end and a signal receiving end, the voltage input end is used for being connected with the power supply input end, the voltage output end is used for being connected with the external output end and the signal receiving end is used for receiving switching signals sent by the control signal end. The light adjustment control circuit capable of eliminating the interference of the control signal end is characterized by further comprising a voltage-regulator diode which is in electric connection between the control signal end and the signal receiving end. The light adjustment control circuit capable of eliminating the interference of the control signal end has the advantages that structure of circuit is simple, influence of interference of the control signal end is eliminated by adding the voltage-regulator diode and light adjustment of a light box is achieved.
Description
technical field [0001] The invention relates to a dimming control circuit, in particular to a dimming control circuit applied in signal lamp boxes on vehicles (especially military equipment such as aircrafts and tanks). Background technique [0002] In the design process of traditional light box products, technicians often regard the control signal as a switch value, for example, the "day / night" conversion signal, when the "ground / open" is closed, it is a low-level signal ( 0V), the light automatically switches to the night state; when the "ground / on" is disconnected, the high-level signal is connected, and the light switches to the day state. However, the above judgment is too idealistic. When the cable connected to the light box product is too long or other factors make its internal resistance unable to be ignored, the low-level signal will no longer be the ideal 0V, but a small voltage Value or voltage range, that is, the controller of the light box may not be able to re...
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IPC IPC(8): H05B37/02
Inventor 陈秀美华雯怡
Owner 上海航铠电子科技有限公司