| 摘要 |
<p>The subject of the invention is a circuit for a temperature control of a LED diode providing a possibility of changing luminous intensity of the LED diode as a function of ambient temperature, wherein an analogue voltage signal is generated as a function of detected temperature on a sensor circuit (1), wherein this signal is compared to a ramp frequency, which is internally set on a regulator (3) by means of a resistor (2) and the signal of the regulator (3) generated based on the intersection point between the ramp frequency and the generated analogue voltage signal determines the current, the size of which depends on the width of the signal of the regulator (3) generated as a function of detected temperature on the sensor circuit (1). Figure 3 should appear in publication.</p> |
