| 摘要 |
<p>A circuit with an LED dimming linear compensation, which includes: a rectification circuit with two inputs connected to the alternating current and two DC outputs, a positive DC output and a negative DC output; a filter circuit with inputs connected to the DC outputs and a positive output and a negative output to output positive pole and negative pole; a RCC drive circuit with an oscillating circuit to drive the LED light source by RCC mode; and a compensation resistance R1 series connected in the front stage of one input of the rectification circuit. The compensation resistance R1 is disposed in the front stage of the rectification circuit, when the branch current increases, the voltage of the RCC drive circuit in the followed stage decreases, as the RCC drive circuit is similar to a resistant load, it improves the voltage-current characteristic of the circuit.</p> |
