But what is the principle of this one circuit? Effective? Ask everybody to express his view. If this is an effective design, ability of parameter of what kind of component makes cost lower and won't damage LED?
In practical and new-style patent " a kind of low cost is high-powered LED lighting circuit " in put forward " steady flow " this one new idea, if this one concept gets the expert is approbated, this one concept can say from electronics angle " fill a conceptual is blank " , although there is what big utility before it. One, " filter wave " with " stabilized voltage " after alternating current source appears, AC changes the need of DC. Want to get power supply of a DC from AC, we have to undertake rectification first, but the tension that rectification output gets is half sine wave, having a simple method then is paralell connection is carried in output a capacitance, collect charge rise, this is filter wave. To not high to requirement of power source wave motion load, wanted filter wave to go only, but for the circuit with the voltage about the same property that obtains cell to asking to want to voltage, filter wave is washed-up, and must stabilized voltage. Circuit of wave of filter of active of the first-rate in filter wave circuit can get approximate the power source at dc, but it still is not regulated power supply. Although receive,be bordering on dc because of the voltage that it outputs, but what can follow input alternating voltage however is elevatory and elevatory, follow the addition of load current and reduce. But the output voltage of regulated power supply won't have this kind of change. Simple regulated power supply, to assure to output the stability of voltage, when input voltage is elevatory, it has to waste excess electric energy go up in stabilized voltage circuit, accordingly, regulated power supply will be calorific, and of filter wave power source calorific want small much. 2, " steady flow " with " constant current " in some electrons circuit, because of some kind of need, we should provide the electricity with firm constant to its, is not stable voltage, arose then " constant current power source " . But still have a kind of element, it does not allow electric current to have bigger wave motion, cannot flow too namely, but, lesser electric current it also can work, for instance LED is a kind of such component. At this moment we should offer the electric current that basically did not fluctuate to go to it only, this current source that uses without filter is called " steady flow source " , this kind of electric current or make electric current becomes this kind of electric current to be called " steady flow " . 3, the contrast of 4 concepts " steady flow " and " filter wave " very similar, but different is, the object that steady flow is aimed at is electric current, and what filter wave is aimed at is voltage; "Constant current " with " stabilized voltage " very similar, but also be differ likewise, the object that constant current is aimed at is electric current, and the object that stabilized voltage is aimed at is voltage. "Steady flow " the addition that follows input electric current, and increase output electric current; "Filter wave " those who follow input tension is elevatory, and elevatory output voltage. "Constant current " the electric current of the input increases and promotion inputs voltage, but output electric current is constant; "Stabilized voltage " the voltage of the input produces change, the tension of output is constant. Note: What narrate here this kind " steady flow circuit " be in patent " a kind of low cost is high-powered LED lighting circuit " (patent date 200520136423.2) in those who put forward, whether to need textual research for initiate. Of other " steady flow circuit " point to commonly adjustable " constant current circuit " .
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