CN207427536U - The control circuit that single wire control bi-colour light is shown - Google Patents

The control circuit that single wire control bi-colour light is shown Download PDF

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Publication number
CN207427536U
CN207427536U CN201721560939.9U CN201721560939U CN207427536U CN 207427536 U CN207427536 U CN 207427536U CN 201721560939 U CN201721560939 U CN 201721560939U CN 207427536 U CN207427536 U CN 207427536U
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China
Prior art keywords
colour light
phase inverter
gpio
parts
current
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CN201721560939.9U
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Chinese (zh)
Inventor
胡楚来
单国峰
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Taicang T&W Electronics Co Ltd
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Taicang T&W Electronics Co Ltd
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Priority to CN201721560939.9U priority Critical patent/CN207427536U/en
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Abstract

The utility model discloses the control circuits that a kind of single wire control bi-colour light is shown, including bi-colour light, current-limiting resistance R1, R2, phase inverter U1, the LED1 parts of wherein bi-colour light are connected with current-limiting resistance R1 to be followed by between GPIO signal input parts and ground, the LED2 parts of bi-colour light are connected with current-limiting resistance R2 to be followed by between the output terminal and ground of phase inverter U1, and the input terminal of phase inverter U1 connects same GPIO signal input parts.The utility model realizes that GPIO port controls bi-colour light by phase inverter, and during GPIO output high level or when low level lights the lamp of different colours, achievees the effect that save GPIO port, greatly improves the utilization rate of GPIO port.

Description

The control circuit that single wire control bi-colour light is shown
Technical field
The utility model belongs to display control circuit field, and in particular to the control electricity that a kind of single wire control bi-colour light is shown Road.
Background technology
At present for various communication products, it is essential that LED, which is shown, but for managed switches, GPIO (General-Purpose Input/Output) port requirements are too many, completely inadequate in the GPIO port of CPU bands in itself In the case of, cost can greatly be increased again by increasing expansion GPIO, and at this time the importance of the utilization rate of GPIO port is with regard to body Reveal and.
At present, normal LED bi-colour lights design is divided into serial and doubling two ways, is all that 2 lines is needed (to need two GPIO port) realize lighting, greatly reduce the utilization rate of port.
Utility model content
The utility model technical issues that need to address are to provide a kind of simple in structure, and single wire control easy to control is double-colored The control circuit that lamp is shown.
To solve the above problems, technical solution adopted in the utility model is:
The control circuit that a kind of single wire control bi-colour light is shown, including bi-colour light, current-limiting resistance R1, R2, phase inverter U1, The LED1 parts of middle bi-colour light are connected with current-limiting resistance R1 to be followed by between GPIO signal input parts and ground, the LED2 portions of bi-colour light Divide to connect with current-limiting resistance R2 and be followed by between the output terminal and ground of phase inverter U1, the input terminal of phase inverter U1 connects same GPIO Signal input part.
Further, the phase inverter U1 is the 74LVC1G04GW chips using SOT353 encapsulation.
It is using advantageous effect caused by above-mentioned technical proposal:The utility model realizes a GPIO by phase inverter Port controlling bi-colour light, during GPIO output high level or when low level, lights the lamp of different colours, reaches and saves GPIO port Effect greatly improves the utilization rate of GPIO port.
Description of the drawings
Fig. 1 is the utility model circuit diagram.
Specific embodiment
Utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1, the utility model include bi-colour light, current-limiting resistance R1, R2, phase inverter U1's, wherein bi-colour light LED1 connects part with current-limiting resistance R1 to be followed by between GPIO signal input parts and ground, LED2 parts and the current limliting electricity of bi-colour light Resistance R2 series connection is followed by between the output terminal and ground of phase inverter U1, and the input terminal of phase inverter U1 connects same GPIO signals input End.When GPIO signal output high level, the LED1 parts that high level signal directly drives bi-colour light are lighted, at this time due to phase inverter The effect of U1,4 foot of the output terminal output low level of phase inverter U1, the LED2 parts of bi-colour light do not work;When GPIO signal outputs are low Level, the LED1 parts of bi-colour light do not work, at this time due to the effect of phase inverter U1, the high electricity of 4 foot of output terminal output of phase inverter U1 Flat, the LED2 parts of bi-colour light are lighted.
To save circuit board space, the phase inverter U1 uses the 74LVC1G04GW chips of SOT353 encapsulation.
The characteristic of the utility model flexible utilization phase inverter realizes the display of 1 GPIO mouthfuls of control bi-colour light, reaches saving The effect of GPIO port.

Claims (2)

1. a kind of control circuit that single wire control bi-colour light is shown, it is characterised in that:Including bi-colour light, current-limiting resistance R1, R2, instead The LED1 parts of phase device U1, wherein bi-colour light are connected with current-limiting resistance R1 to be followed by between GPIO signal input parts and ground, double-colored The LED2 parts of lamp are connected with current-limiting resistance R2 to be followed by between the output terminal and ground of phase inverter U1, and the input terminal of phase inverter U1 connects Connect same GPIO signal input parts.
2. the control circuit that single wire control bi-colour light according to claim 1 is shown, it is characterised in that the phase inverter U1 It is the 74LVC1G04GW chips using SOT353 encapsulation.
CN201721560939.9U 2017-11-21 2017-11-21 The control circuit that single wire control bi-colour light is shown Active CN207427536U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721560939.9U CN207427536U (en) 2017-11-21 2017-11-21 The control circuit that single wire control bi-colour light is shown

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721560939.9U CN207427536U (en) 2017-11-21 2017-11-21 The control circuit that single wire control bi-colour light is shown

Publications (1)

Publication Number Publication Date
CN207427536U true CN207427536U (en) 2018-05-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721560939.9U Active CN207427536U (en) 2017-11-21 2017-11-21 The control circuit that single wire control bi-colour light is shown

Country Status (1)

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CN (1) CN207427536U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110290619A (en) * 2019-07-19 2019-09-27 苏州浪潮智能科技有限公司 A kind of port status display circuit of HBA board and board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110290619A (en) * 2019-07-19 2019-09-27 苏州浪潮智能科技有限公司 A kind of port status display circuit of HBA board and board

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