CN204425004U - LED-based car battery charging indication warning circuit - Google Patents
LED-based car battery charging indication warning circuit Download PDFInfo
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- CN204425004U CN204425004U CN201520180843.4U CN201520180843U CN204425004U CN 204425004 U CN204425004 U CN 204425004U CN 201520180843 U CN201520180843 U CN 201520180843U CN 204425004 U CN204425004 U CN 204425004U
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- battery charging
- car battery
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Abstract
LED-based car battery charging indication warning circuit, belongs to light-emitting diode (LED) applied technical field.Use in the warning circuit of light-emitting diode (LED) replacement bulb in order to solve at automobile combination meter, the problem of warning circuit undercurrent.LED P L1 is connected with multiple resistor coupled in parallel after connecting with resistance R2, be then connected in series with diode RD1, and the negative electrode of described diode RD1 is the external interface of warning circuit.The present invention is mainly used on car battery charging indication warning circuit.
Description
Technical field
The invention belongs to LED applied technical field.
Background technology
The signal of existing automobile combination meter adopts LED lighting mostly, the features such as it is little that light-emitting diode has power, and caloric value is little, long service life.Replace the application of bulb at automobile combination meter comprehensively.And " charge in batteries instruction " warning circuit of automobile combination meter is due to particularity, needs can pass through more than 100mA electric current, and " charge in batteries instruction " warning circuit bulb does the mode of instruction of reporting to the police, and can meet above condition.LED is maximum can only pass through 20mA electric current, so be applied in " charge in batteries instruction " warning circuit, just necessary adjustment member circuit, meets the current requirements of " charge in batteries instruction " warning circuit.
Utility model content
The present invention uses in the warning circuit of light-emitting diode (LED) replacement bulb in order to solve at automobile combination meter, the problem of warning circuit undercurrent, the invention provides a kind of LED-based car battery charging indication warning circuit.
LED-based car battery charging indication warning circuit, LED P L1 is connected with multiple resistor coupled in parallel after connecting with resistance R2, be then connected in series with diode RD1, and the negative electrode of described diode RD1 is the external interface of warning circuit.
Warning circuit also comprises resistance R1, and this resistance R1 and LED P L1 is connected in parallel.
Described multiple resistance is the resistance of more than 3 or 3.
Technical solution of the present invention, can be used on various.
By light-emitting diode (LED) replacement bulb in warning circuit, can increase substantially the useful life of warning circuit, reduce caloric value, product quality reliability increases substantially; The space that warning circuit takies in instrument PCB substrate can also be reduced, improve the utilance in space.Reduce PCB surface to amass, reduce the cost of instrument PCB substrate; The bulb of manual assembly is changed into the LED of machine attachment, improve operating efficiency, reduce the risk that manual assembly brings.Processing performance improves greatly.
The beneficial effect that the present invention brings is, the present invention replaces the mode of bulb and multiple shunt resistance by light-emitting diode, realizes the object of the current requirements extending warning circuit useful life and meet warning circuit, realizes the instruction of signal alarm.Circuit structure of the present invention is simple and reliable, the reliability of the circuit using light-emitting diode (LED) greatly to improve and life-span, and meets warning and the requirement by electric current simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the LED-based car battery charging indication warning circuit described in embodiment one.
Embodiment
Embodiment one: present embodiment is described see Fig. 1, LED-based car battery charging indication warning circuit described in present embodiment, LED P L1 is connected with multiple resistor coupled in parallel after connecting with resistance R2, be then connected in series with diode RD1, and the negative electrode of described diode RD1 is the external interface of warning circuit.
In present embodiment, resistance R2 is for LED P L1 is arranged on the minimum voltage value (threshold) lighted in whole warning circuit, and the effect of diode RD1 prevents reverse voltage and electric current to the injury of whole warning circuit.
LED P L1 is connected with multiple resistor coupled in parallel after connecting with resistance R2, wherein " multiple resistance " effect be shunting, make electric current by general supply, after multiple resistance and resistance R2 and LED P L1, arrive diode RD1 negative electrode, namely the electric current of external interface meets line requirements.
Embodiment two: the charge difference of indication warning circuit of present embodiment and the LED-based car battery described in embodiment one is, it also comprises resistance R1, and this resistance R1 and LED P L1 is connected in parallel.
In present embodiment, resistance R1 is the electric current controlling to flow through LED P L1, plays the effect of shunting,
Embodiment three: present embodiment is described see Fig. 1, the charge difference of indication warning circuit of present embodiment and the LED-based car battery described in embodiment one is, described multiple resistance is the resistance of more than 3 or 3.
When multiple resistance is 3, and be respectively the 3rd resistance R3 and the 4th resistance R4, the 5th resistance R5;
3rd resistance R3 is in parallel with the 4th resistance R4, the 5th resistance R5, the general supply of one end circuit taking alarm after in parallel; The negative pole of other end sending and receiving optical diode PL1, the other end of the first resistance R1 and the anode of diode RD1 after in parallel; 3rd resistance R3 and the 4th resistance R4, the 5th resistance R5 parallel-connection structure undertake the effect of current distributing in total warning circuit, make electric current by general supply, by after the 3rd resistance R3 and the 4th resistance R4, the 5th resistance R5 through diode RD1, the electric current arriving diode RD1 negative electrode and external interface meets line requirements.
3rd resistance R3 is in parallel with the 4th resistance R4, the 5th resistance R5 to be power in order to ensure resistance and single resistance is divided into 3, thus use power is improved 3 times.
In actual installation process, according to shunting needs, a resistance arbitrarily can be installed, such as: when needing the current ratio of shunting more as a child, only welding two resistance.When the electric current shunted needs adjustment time, three, four resistance can be welded.The technique simplified, and be the shunting needs for different light-emitting diode.
Claims (3)
1. LED-based car battery charging indication warning circuit, it is characterized in that, light-emitting diode (PL1) is connected with multiple resistor coupled in parallel after connecting with resistance R2, be then connected in series with diode (RD1), and the negative electrode of described diode (RD1) is the external interface of warning circuit.
2. LED-based car battery charging indication warning circuit according to claim 1, it is characterized in that, it also comprises resistance R1, and this resistance R1 and light-emitting diode (PL1) are connected in parallel.
3. LED-based car battery charging indication warning circuit according to claim 1, it is characterized in that, described multiple resistance is the resistance of more than 3 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180843.4U CN204425004U (en) | 2015-03-27 | 2015-03-27 | LED-based car battery charging indication warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180843.4U CN204425004U (en) | 2015-03-27 | 2015-03-27 | LED-based car battery charging indication warning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425004U true CN204425004U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520180843.4U Active CN204425004U (en) | 2015-03-27 | 2015-03-27 | LED-based car battery charging indication warning circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425004U (en) |
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2015
- 2015-03-27 CN CN201520180843.4U patent/CN204425004U/en active Active
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |