Özütürk, Erdem2024-06-112024-06-112021-02-260030-4026https://doi.org/10.1016/j.ijleo.2021.166655https://www.sciencedirect.com/science/article/pii/S0030402621003740https://hdl.handle.net/11452/41959In this study, a new method of measuring LED junction temperature is given. The linear relative radiant power/temperature variation has been utilized in this method. This method can be applied at pulsed high currents of LED. The measurement system used here consists of a pulse oscillator, an appropriate LED driving circuit and a photodetector circuit. A photodetector voltage, which is proportional to the radiant power of LED, has been measured by using an oscilloscope, and junction temperature have been determined by making easy calculations on it. A constant, which is obtained from linear relative radiant power/junction temperature characteristics, has been used in this calculation.eninfo:eu-repo/semantics/closedAccessLedJunction temperatureMeasuring methodOpticsArticle00063679560000623510.1016/j.ijleo.2021.1666551618-1336