CN221306143U - Circuit for realizing color switching of double-color lamp by single control port - Google Patents
Circuit for realizing color switching of double-color lamp by single control port Download PDFInfo
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- CN221306143U CN221306143U CN202322896506.2U CN202322896506U CN221306143U CN 221306143 U CN221306143 U CN 221306143U CN 202322896506 U CN202322896506 U CN 202322896506U CN 221306143 U CN221306143 U CN 221306143U
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- 239000003086 colorant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of LED circuits, in particular to a circuit for realizing color switching of a bicolor lamp by a single control port, which comprises resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, npn type triodes Q1, Q3, pnp type triodes Q2, bicolor lamp LED1, a diode D1 and a capacitor C1, wherein one end of the capacitor C1 and one end of the resistor R9 are respectively connected with a base electrode of the Q3, the other end of the C1, the other end of the R9, one end of the R5 and an emitter of the Q3 are respectively connected with one end of the LED1 and grounded, one end of the R7, an emitter of the Q2 and one end of the R4 are respectively connected with one end of the resistor R3, the other end of the R3 is connected with a collector electrode of the Q1, the other end of the R1 is respectively connected with the LED1, one end of the other end of the R7 is respectively connected with a base electrode of the Q2, one end of the R8 is connected with one end of the R2, the other end of the R2 is respectively connected with one end of the LED1, and the other end of the R4 is respectively connected with the bases of the Q1 and the R5.
Description
Technical Field
The utility model relates to the technical field of LED circuits, in particular to a circuit for realizing color switching of a bicolor lamp by a single control port.
Background
Referring to fig. 1, blue LEDs and red LEDs are packaged together to form a total of 3 pins LED1, and the total of 3 pins LED 1: the 1 foot, the 2 foot connects control port "CON1" and "CON2",3 foot ground, when the control port "CON1" connects positive voltage, through the current-limiting resistor of R1, the blue LED lights up at this moment, LED1 shows the blue; when the control port 'CON 2' is connected with positive voltage, the red LED is lightened at the moment through the R2 current limiting resistor, and the LED1 displays red. The prior art has the defects that two control ports of CON1 and CON2 are needed to realize that the LED1 presents two colors, and the circuit composition is relatively complex, so improvement is needed.
Disclosure of utility model
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a circuit for implementing color switching of a bi-color lamp with a single control port.
In order to achieve the above objective, the present utility model provides a circuit for implementing color switching of a bi-color lamp through a single control port, which comprises resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, npn transistors Q1, Q3, pnp transistor Q2, bi-color lamp LED1, diode D1 and capacitor C1, wherein one end of the capacitor C1 and one end of the resistor R9 are respectively connected to the base of Q3, the other end of the capacitor C1, the other end of the resistor R9, one end of the resistor R5 and the emitter of the Q3 are respectively connected to one end of the LED1 and grounded, one end of the resistor R7, one end of the emitter of the resistor Q2 and one end of the resistor R4 are respectively connected to one end of the resistor R3, the other end of the resistor R3 is connected to the collector of the resistor Q1, one end of the other end of the resistor R1 is connected to the LED1, one end of the other end of the resistor R7 is respectively connected to the base of the resistor Q2, one end of the resistor R8 is connected to one end of the resistor C2, the other end of the resistor C2 is connected to one end of the resistor C2, the other end of the resistor R2 is respectively connected to the other end of the resistor R1 is connected to the other end of the resistor 1, the other end of the resistor R4 is respectively connected to the other end of the resistor 1 and the collector of the resistor 1.
Preferably, the model of Q1 is D1898.
Preferably, the model number of Q2 is B1260.
Preferably, the model of Q3 is C2412.
Preferably, the LED1 is a common-cathode 3-pin LED.
Compared with the prior art, the utility model has the beneficial effects that:
the base electrode potential of the triode is controlled to realize the characteristic of conducting or cutting off the triode, the NPN triode and the PNP triode are flexibly applied, the two groups of voltage output can be controlled through a single control port by combining the bicolor common negative LED, the bicolor LED can emit different colors, and the bicolor LED can be used for indicating functions or states of products, so that the LED is simple and reliable, and the states can be indicated by the two groups of colors.
Drawings
In order to more clearly illustrate the solution of the present utility model, a brief description will be given below of the drawings required for the description of the embodiments of the present utility model, it being apparent that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained from these drawings without the exercise of inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of a circuit for implementing color switching of a bi-color lamp by using a dual control port in the market.
Fig. 2 is a schematic diagram of a circuit for implementing color switching of a bi-color lamp by a single control port according to the present utility model.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
The terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Referring to fig. 2, the circuit for implementing color switching of a bi-color lamp through a single control port provided by the utility model comprises resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, npn transistors Q1, Q3, pnp transistor Q2, bi-color lamp LED1, diode D1 and capacitor C1, wherein one end of the capacitor C1 and one end of the resistor R9 are respectively connected with the base of Q3, the other end of the capacitor C1, the other end of the resistor R9, one end of the resistor R5 and the emitter of the Q3 are respectively connected with one end of the LED1 and grounded, one end of the resistor R7, the emitter of the resistor Q2 and one end of the resistor R4 are respectively connected with one end of the resistor R3, the other end of the resistor R3 is connected with the collector of the resistor Q1, the other end of the resistor R1 is connected with the LED1, the other end of the resistor R7 is respectively connected with the base of the resistor Q2, one end of the resistor R8 is connected with one end of the resistor C2, the other end of the resistor Q2 is connected with one end of the resistor R2, the other end of the resistor R2 is respectively connected with the other end of the resistor R1, the other end of the resistor R4 is respectively connected with the other end of the resistor 1 and the collector of the resistor is connected with the collector of the resistor 1. Wherein the model of Q1 is D1898; q2 is model B1260; q3 is model C2412.
The base electrode of the Q3 is also connected with a single control port CON1, and only a high level or a low level is needed to be connected; the emitter of Q2 is also connected with the total power supply port VCC; LED1 is a common 3-pin LED. When CON1 is low, Q3 is off; q2 is also off because the base is high; the base electrode of the Q1 is in a high level through R4 and R5 voltage division, the collector electrode of the Q1 outputs a high level to the emitter electrode, at the moment, the emitter electrode of the Q1 outputs a high level, and after the current is limited by the resistor R1, the LED1 emits blue light; when CON1 is in high level, the collector of Q3 is in low level, the base electrode of Q2 is pulled down to be lower than the emitter potential of Q2 through R8, the collector of Q2 outputs high level at the moment, power is supplied to the red LED through R2, and the LED1 displays red at the moment; the base of Q1 is at low potential through R6, D1, the emitter of Q1 outputs low potential, at this time blue LED is not bright, only display red.
The circuit of the utility model does not need to be provided with two control ports, and can realize that the LED indicator lamp presents two different states through single-ended control of high or low level by utilizing a conventional element, and can realize that the LED1 generates two colors only by single-ended control of voltage. Wherein, Q1, Q2, Q3 can adopt common triode to realize 1 foot, 2 feet of LED1 are in high or low state, thus realize LED1 can become two kinds of colors; the scheme of the utility model has the characteristics of simplicity, reliability and low cost of peripheral elements
The foregoing is merely illustrative of the present utility model and is not to be construed as limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; all equivalent structures or equivalent flow changes made by the specification and the attached drawings of the utility model or directly or indirectly applied to other related technical fields are included in the protection scope of the utility model.
Claims (5)
1. A circuit for realizing color switching of a double-color lamp by a single control port is characterized in that: the LED comprises resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, npn type triodes Q1, Q3, pnp type triodes Q2, bicolor light LEDs 1, a diode D1 and a capacitor C1, wherein one end of the capacitor C1 and one end of the resistor R9 are respectively connected with a base electrode of the Q3, the other end of the capacitor C1, the other end of the resistor R9, one end of the R5 and an emitter of the Q3 are respectively connected with one end of the LED1 and grounded, one end of the R7, one end of the emitter of the Q2 and one end of the R4 are respectively connected with one end of the resistor R3, the other end of the R3 is connected with a collector of the Q1, one end of the emitter of the Q1 is connected with one end of the R1, the other end of the R1 is respectively connected with one end of the base electrode of the Q2 and one end of the R8, the other end of the R2 is respectively connected with the base electrode of the LED1, the other end of the R4 is respectively connected with the other end of the Q1 and the other end of the R5, and the other end of the R8 is respectively connected with the anode of the resistor D1 and the anode of the resistor D1.
2. The circuit for implementing color switching of a bi-color lamp with a single control port of claim 1, wherein: the model of Q1 is D1898.
3. The circuit for implementing color switching of a bi-color lamp with a single control port of claim 1, wherein: the model number of Q2 is B1260.
4. The circuit for implementing color switching of a bi-color lamp with a single control port of claim 1, wherein: the model of Q3 is C2412.
5. The circuit for implementing color switching of a bi-color lamp with a single control port of claim 1, wherein: the LED1 is a common-cathode 3-pin LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322896506.2U CN221306143U (en) | 2023-10-26 | 2023-10-26 | Circuit for realizing color switching of double-color lamp by single control port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322896506.2U CN221306143U (en) | 2023-10-26 | 2023-10-26 | Circuit for realizing color switching of double-color lamp by single control port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221306143U true CN221306143U (en) | 2024-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322896506.2U Active CN221306143U (en) | 2023-10-26 | 2023-10-26 | Circuit for realizing color switching of double-color lamp by single control port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221306143U (en) |
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2023
- 2023-10-26 CN CN202322896506.2U patent/CN221306143U/en active Active
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