CN202475847U - LED decorating lamp on-off control circuit - Google Patents
LED decorating lamp on-off control circuit Download PDFInfo
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- CN202475847U CN202475847U CN2011205733528U CN201120573352U CN202475847U CN 202475847 U CN202475847 U CN 202475847U CN 2011205733528 U CN2011205733528 U CN 2011205733528U CN 201120573352 U CN201120573352 U CN 201120573352U CN 202475847 U CN202475847 U CN 202475847U
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- resistance
- triode
- capacitor
- collector electrode
- control circuit
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Abstract
The utility model discloses an LED decorating lamp on-off control circuit. A bistable trigger circuit is composed of a resistor R4, a resistor R5, resistor R6, resistor R7, a diode D2, a diode D3, a triode Q7, a triode Q8, a capacitor C2, and a capacitor C3. The collector electrode of the triode Q7 is connected with a direct current power supply via a resistor R3. The collector electrode of the triode Q8 is connected with the direct current power supply via a resistor R2. One contact of a touch button S1 is connected with a parallel terminal of the capacitor C2 and the capacitor C3, and the other contact is connected with the ground. One terminal of a capacitor C1 is connected with the collector electrode of the triode Q7 or the collector electrode of the triode Q8, and the other terminal is connected with the ground. The LED decorating lamp on-off control circuit has the characteristics of low cost, long service lifetime, high reliability, and excellent practicability.
Description
Technical field
The utility model belongs to the electronic circuit technology field, is specifically related to the ON-OFF control circuit of LED decorative lamp.
Background technology
The LED light fixture has long, firm anti-the falling of energy-saving and environmental protection, rich color, life-span, and low-voltage just can start or the like advantage, is throwing light on and field such as demonstration has obtained extensive use.In addition, nowadays household electrical appliance are more and more paid attention to the decorative effect of product to the space except pursuing perfect functions.For example, in small household appliances cheaply, add the simple LED decorative lamp, will give more beautiful, the more intuitive sensation of people.Yet the switch control of the control of the switch of these LED decorative lamps and electrical equipment self function is also asynchronous, and electrical equipment self function mainly is to answer user's demand switch at any time, and that the LED decorative lamp is lighted usually by day is less, and light more evening.So the LED lamp needs special-purpose ON-OFF control circuit, traditional way all is to add a mechanical switch, but does not have advantage on the life-span of mechanical switch, cost, and it is bigger to take up room, and is unfavorable for the miniaturization household electrical appliance.In addition, if use integrated chip controls LED decorative lamp, its cost will can improve a lot again.
The utility model content
The purpose of the utility model is defective and the deficiency to prior art, and a kind of new LED decorative lamp ON-OFF control circuit is provided; The purpose of the utility model is realized by following technical scheme:
A kind of LED decorative lamp ON-OFF control circuit; It is characterized in that, comprise the LED lamp, touch button, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, diode D2, diode D3, triode Q7, triode Q8, capacitor C 1, capacitor C 2, capacitor C 3; Wherein, resistance R 4, resistance R 5, resistance R 6, resistance R 7, diode D2, diode D3, triode Q7, triode Q8, capacitor C 2, capacitor C 3 constitute bistable trigger-action circuit; The collector electrode of triode Q7 connects DC power supply through resistance R 3, and the collector electrode of triode Q8 connects DC power supply through resistance R 2; A contact of touching button S1 connects the parallel connected end of capacitor C 2 and capacitor C 3, another contact ground connection; The collector electrode of capacitor C 1 one termination triode Q7 or the collector electrode of triode Q8, other end ground connection.
Above-mentioned LED decorative lamp ON-OFF control circuit comprises that also current-limiting resistance R1 is connected between LED lamp and the DC power supply.
Above-mentioned LED decorative lamp ON-OFF control circuit also comprises resistance R 8 and resistance R 9, and resistance R 8 is parallelly connected with said capacitor C 2, and resistance R 9 is parallelly connected with said capacitor C 3, forms the electric capacity bleed-off circuit respectively.
The utility model provides a kind of low cost, long-life LED decorative lamp control circuit, and its button adopts soft-touch type, and stroke is short, the life-span is long, reliability is high; In addition, adopt steady-state circuit to realize switch control to the LED lamp, or the color lamp conversion.The utility model is particularly suitable for being applied in the decoration of small household electrical appliance, and cost is low, practicality good.
Description of drawings
Fig. 1 is the LED decorative lamp ON-OFF control circuit figure that embodiment provides.
Embodiment
As shown in Figure 1, the LED decorative lamp ON-OFF control circuit that present embodiment provides comprises: color LED lamp D1, touch button S1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, diode D2, diode D3, triode Q7, triode Q8, capacitor C 1, capacitor C 2, capacitor C 3.
Wherein, resistance R 4, resistance R 5, resistance R 6, resistance R 7, diode D2, diode D3, triode Q7, triode Q8, capacitor C 2, capacitor C 3 have constituted basic bistable trigger-action circuit.Particularly; Resistance R 4 is connected between triode Q7 collector electrode and the triode Q8 base stage, and resistance R 5 is connected between triode Q8 collector electrode and the triode Q7 base stage, and triode Q7 emitter and triode Q8 emitter be ground connection respectively; Resistance R 6 is connected between triode Q7 collector electrode and the capacitor C 2; Resistance R 7 is connected between triode Q8 collector electrode and the capacitor C 3, and diode D2 is connected between triode Q7 base stage and the capacitor C 2, and diode D3 is connected between triode Q8 base stage and the capacitor C 3.
The collector electrode of triode Q7 connects direct current 5V power supply through resistance R 3, and the collector electrode of triode Q8 connects direct current 5V power supply through resistance R 2 and resistance R 1.A contact of touching button S1 connects the parallel connected end of capacitor C 2 and capacitor C 3, another contact ground connection.Capacitor C 1 one ends connect direct current 5V power supply, other end ground connection through resistance R 3.For making stable state reliable, LED lamp D1 is parallelly connected with resistance R 2, and resistance R 1 plays metering function for LED lamp D1.In addition, resistance R 8 is parallelly connected with capacitor C 2, and resistance R 9 is parallelly connected with capacitor C 3, forms the electric capacity bleed-off circuit respectively, to improve the sensitivity of button.Diode D2 and diode D3 play the stable state buffer action, make triode Q7, and the base stage level of triode Q8 is unaffected, and resistance R 6 provides current circuit with resistance R 7 for capacitor C 2 and capacitor C 3.
The operation principle of foregoing circuit structure is: after powering on, because capacitor C 1 charging makes the collector electrode of triode Q7 produce the moment low level; Through resistance R 4 couplings, this moment, the base stage of triode Q8 also was a low level, and triode Q8 ends; Make the collector electrode output high level of triode Q8; Feed back to the base stage of triode Q7 then again through resistance R 5, make triode Q7 be in the saturation conduction state, it is stable that circuit reaches.After triode Q8 ended, the negative electrode of LED lamp D1 was a high level just, and LED lamp D1 is not luminous.
When pressing when touching button S1, because capacitor C 2 or capacitor C 3 instant earthings, the negative electrode that makes diode D2, D3 is low; This moment, then the base stage of triode Q7 was a low level as if triode Q7 conducting, and triode Q7 will end; Thereby triode Q8 conducting; Make the steady-state circuit upset, the current collection of triode Q8 is low level very, and D1 is luminous with conducting for the LED lamp.Press and repeat above process once more, control the Kai Heguan of color lamp with this.Just bright if will power at every turn, the collector electrode that then capacitor C 1 is connected to triode Q8 can be realized.
Claims (3)
1. LED decorative lamp ON-OFF control circuit; It is characterized in that, comprise the LED lamp, touch button, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, diode D2, diode D3, triode Q7, triode Q8, capacitor C 1, capacitor C 2, capacitor C 3; Wherein, resistance R 4, resistance R 5, resistance R 6, resistance R 7, diode D2, diode D3, triode Q7, triode Q8, capacitor C 2, capacitor C 3 constitute bistable trigger-action circuit; The collector electrode of triode Q7 connects DC power supply through resistance R 3, and the collector electrode of triode Q8 connects DC power supply through resistance R 2; A contact of touching button S1 connects the parallel connected end of capacitor C 2 and capacitor C 3, another contact ground connection; The collector electrode of capacitor C 1 one termination triode Q7 or the collector electrode of triode Q8, other end ground connection.
2. LED decorative lamp ON-OFF control circuit as claimed in claim 1 is characterized in that, comprises that also current-limiting resistance R1 is connected between LED lamp and the DC power supply.
3. LED decorative lamp ON-OFF control circuit as claimed in claim 2 is characterized in that, also comprises resistance R 8 and resistance R 9, and resistance R 8 is parallelly connected with said capacitor C 2, and resistance R 9 is parallelly connected with said capacitor C 3, forms the electric capacity bleed-off circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205733528U CN202475847U (en) | 2011-12-30 | 2011-12-30 | LED decorating lamp on-off control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205733528U CN202475847U (en) | 2011-12-30 | 2011-12-30 | LED decorating lamp on-off control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475847U true CN202475847U (en) | 2012-10-03 |
Family
ID=46923966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205733528U Expired - Lifetime CN202475847U (en) | 2011-12-30 | 2011-12-30 | LED decorating lamp on-off control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202475847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113956A (en) * | 2013-04-22 | 2014-10-22 | 深圳市海洋王照明工程有限公司 | Lighting switch control circuit and lamp |
-
2011
- 2011-12-30 CN CN2011205733528U patent/CN202475847U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113956A (en) * | 2013-04-22 | 2014-10-22 | 深圳市海洋王照明工程有限公司 | Lighting switch control circuit and lamp |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |