CN104486869A - Lamp capable of automatically stabilizing working voltage and current - Google Patents
Lamp capable of automatically stabilizing working voltage and current Download PDFInfo
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- CN104486869A CN104486869A CN201410684069.0A CN201410684069A CN104486869A CN 104486869 A CN104486869 A CN 104486869A CN 201410684069 A CN201410684069 A CN 201410684069A CN 104486869 A CN104486869 A CN 104486869A
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Abstract
The invention discloses a lamp capable of automatically stabilizing working voltage and current. The lamp comprises capacitors and resistors, which are adopted to reduce voltage, as well as a rectifier circuit and a direct current light-emitting device. The lamp is characterized in that a capacitor C2 and a resistor R2 are connected in a direct current loop of a point A and a point B behind the rectifier circuit in parallel, a resistor R3 is connected between the point A and an output anode of a power supply in series, a voltage stabilizing diode VD, which is connected to the circuit in a reverse breakover way, is connected between the point B and an output cathode of the power supply in series, and the light-emitting device is respectively connected to the back end of the resistor R3 and the cathode end of the voltage stabilizing diode VD. The lamp has the advantages of capability of automatically and stably outputting working voltage and current, small calorific value and small size.
Description
Technical field
The present invention relates to a kind of power supply and light fixture, particularly the light fixture of a kind of automatic stabilisation operating voltage and electric current.
Background technology
Tradition adopts electric capacity, resistance step-down and rectifier circuit rectifies to obtain DC power supply, its operating voltage exported and electric current can be followed the variation of input voltage and change, as needed regulated output voltage, more complicated voltage stabilizing circuit need be adopted to carry out voltage stabilizing, common voltage stabilizing circuit or light fixture are provided with the radiator of different size according to its power output size, make power supply huge, radiating effect is poor, directly affects the life-span of light fixture.
Summary of the invention
Object of the present invention is just to provide energy automatic stabilisation output services voltage and current, and caloric value is little, the light fixture of the automatic stabilisation operating voltage that volume is little and electric current.
Solution of the present invention is such:
The light fixture of a kind of automatic stabilisation operating voltage and electric current, comprise and adopt electric capacity, resistance step-down and rectification circuit and direct current luminescent device, it is characterized in that: in A, B point direct current loop after rectification circuit, be parallel with electric capacity C2, resistance R2, resistance R3 is in series with between A point and power supply output cathode, between B point and power supply output negative pole, be in series with the voltage stabilizing didoe VD of reverse-conducting place in circuit, described luminescent device is contact resistance R3 rear end and voltage stabilizing didoe VD negative pole end respectively.
Advantage of the present invention is energy automatic stabilisation output services voltage and currents, and caloric value is little, and volume is little.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of light fixture embodiment one of the present invention.
Fig. 2 is the circuit theory diagrams of light fixture embodiment two of the present invention.
Embodiment
In light fixture as shown in Figure 1, adopt electric capacity C1, resistance R1 step-down and by diode D1, D2, D3, the rectifier circuit rectifies of D4 composition and direct current luminescent device K, A after rectification circuit, B point direct current is parallel with electric capacity C2 in loop, resistance R2, resistance R3 is in series with between A point and power supply output cathode, the voltage stabilizing didoe VD of reverse-conducting place in circuit is in series with between B point and power supply output negative pole, luminescent device K is individual devices, its two ends are contact resistance R3 rear end and voltage stabilizing didoe VD negative pole end respectively, power supply and luminescent device K are installed as one, be light fixture of the present invention.
The operation principle of light fixture shown in Fig. 1 and the process of automatic stabilisation operating voltage and electric current as follows:
Input access 220V AC power, after electric capacity C1, resistance R1 step-down, direct current is obtained by diode D1, D2, D3, D4 rectification, and electric capacity C2 is charged, direct current exports through resistance R3, flows through the negative pole that luminescent device K arrives zener diode VD, after now voltage reaches the voltage of zener diode VD reverse-conducting, zener diode VD conducting, luminescent device K sends a telegram in reply work.After zener diode VD conducting, the voltage at its two ends drops quickly to lower than its conducting voltage, zener diode VD ends, luminescent device K quits work, after zener diode cut-off, its cathode voltage to be climbed to again after conducting voltage conducting again and to repeat the action of conducting, cut-off, by fast conducting and the cut-off of zener diode VD, makes to be remained in a constant basis by the operating current of luminescent device K.When input alternating voltage reduces; the direct voltage exported also reduces; voltage on voltage stabilizing didoe negative pole is lower than conducting voltage; zener diode VD ends; circuit does not work; now; direct current after diode D1, D2, D3, D4 rectification alternately charges to electric capacity C2; electric capacity C2 both end voltage rises and reaches operating voltage; zener diode VD cathode voltage reaches conducting voltage and conducting, and luminescent device K works, and the electric current of electric capacity C2 can bleed off by shunt resistance R2; electric current can hinder by resistance flowing resistance R3 late, protection luminescent device K.
The work of automatic stabilisation output services voltage and current is realized by voltage stabilizing didoe VD, zener diode VD fast conducting and cut-off, make the electric current relative constancy flowing through zener diode VD during each conducting, also the operating current relative constancy of luminescent device K is just realized, and only when alternating current voltage reduces, export DC voltage and reduce, when voltage stabilizing didoe VD cathode voltage ends lower than conducting voltage, just to electric capacity C2 alternately charging, the voltage at electric capacity C2 two ends can be promoted.
Luminescent device K can be any one light-emitting component, as bulb, LED light source etc.
Its luminescent device of light fixture shown in Fig. 2 K is the structure of many series connection, difference contact resistance R3 rear end and voltage stabilizing didoe VD negative pole end after series connection; Its operation principle and automatic stabilisation operating voltage consistent with power supply shown in Fig. 1 with the process of electric current.
Claims (1)
1. the light fixture adopting power supply according to claim 1 to manufacture, comprise and adopt electric capacity, resistance step-down and rectifier circuit rectifies and direct current luminescent device, it is characterized in that: in A, B point direct current loop after rectification circuit, be parallel with electric capacity C2, resistance R2, resistance R3 is in series with between A point and power supply output cathode, between B point and power supply output negative pole, be in series with the voltage stabilizing didoe VD of reverse-conducting place in circuit, described luminescent device is contact resistance R3 rear end and voltage stabilizing didoe VD negative pole end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684069.0A CN104486869A (en) | 2014-11-25 | 2014-11-25 | Lamp capable of automatically stabilizing working voltage and current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684069.0A CN104486869A (en) | 2014-11-25 | 2014-11-25 | Lamp capable of automatically stabilizing working voltage and current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104486869A true CN104486869A (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410684069.0A Pending CN104486869A (en) | 2014-11-25 | 2014-11-25 | Lamp capable of automatically stabilizing working voltage and current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104486869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174853A (en) * | 2019-06-13 | 2019-08-27 | 苏州科达科技股份有限公司 | The stabilising arrangement and method of loaded work piece electric current |
-
2014
- 2014-11-25 CN CN201410684069.0A patent/CN104486869A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174853A (en) * | 2019-06-13 | 2019-08-27 | 苏州科达科技股份有限公司 | The stabilising arrangement and method of loaded work piece electric current |
| CN110174853B (en) * | 2019-06-13 | 2020-09-25 | 苏州科达科技股份有限公司 | Load working current stabilizing device and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |