OII na Sperimentale

Experiment A2-1 Italiano (Italy) Light Emitting Diode (LED) (10 punti) Parte A. Caratteristica Volt-Ampere per differenti temperature (5.0 punti) A.1 (2.5 pt) Riporta in grafico la relazione ILED_pulsato(ULED_pulsato, T) alla temperatura ambiente, e a 40, 60, and 80 ${}^{\circ }C$ (modalità pulsata) sulla carta millimetrata: A.2 (1.0 pt) Compila la tabella con i valori corrispondenti di ULED_pulsato(ILED_pulsato, T): ”Temperatura ambiente” ${}^{\circ }C$ 40 ${}^{\circ }C$ 60 ${}^{\circ }C$ 80 ${}^{\circ }C$ 3 mA 10 mA 20 mA 40 mA

Experiment A2-2 Italiano (Italy)

Experiment A2-3 Italiano (Italy) A.3 (1.5 pt) Riporta in grafico i punti principali di ULED_pulsato(ILED_pulsato, T) (A.2) su carta millimetrata . Usa una approssimazione lineare grafica per determinare $\text{DeltaU}(I$) $\text{DeltaT}$: Approssimazione lineare grafica: ILED 3 mA 10 mA 20 mA 40 mA $\text{DeltaU}(I$) $\text{DeltaT}$

Experiment A2-4 Italiano (Italy) Parte B. Misura della caratteristica Volt-Ampere del LED per corrente di alimentazione continua (3.5 punti)) B.1 (1.5 pt) Riporta in grafico la relazione ILED_continua(ULED_continua) a temperatura ambiente (modalità continua) su carta millimetrata: Compila la tabella con i valori corrispondenti: ILED 3 mA 10 mA 20 mA 40 mA ULED $\text{DeltaU}$ TJ TPCB

Experiment A2-5 Italiano (Italy) B.2 (0.5 pt) ILED 3 mA 10 mA 20 mA 40 mA dI dU B.3 (1.5 pt) Riporta in grafico $\text{DeltaT}(P$) su carta millimetrata: Compila la tabella con i valori corrispondenti: ILED 3 mA 10 mA 20 mA 40 mA $\text{DeltaT}$ Resistenza termica lineare del LED $\text{DeltaT}$ P:

Experiment A2-6 Italiano (Italy) Parte C. Calcolo della corrente di deriva del LED causata dalla temperatura (1.5 punti)) C.1 (1.5 pt) ILED(U20 mA, 0 ∘C) =

ILED(U20 mA, 40 ∘C) =

Topic: Circuits, Thermodynamics, Electrostatics Metodi: Experimental Data Analysis, Graph Linearization, Physical Modeling Competenze: Experimental Data Analysis, Graph Linearization, Mathematical Modeling Objects: — Fonte: Testo (PDF) — p.1 Soluzione: Soluzioni (PDF)

Experiments A2-1 Italian (Italy) The following information shall be provided: Part A. The value of the product shall be the value of the product concerned. A.1 (2.5 pt) Report the ILED_pulsate (ULED_pulsate, T) ratio to room temperature and at 40, 60, and 80 ${}^{\circ }C$ (pressed mode) on millimeter paper: A.2 (1.0 pt) Complete the table with the corresponding values of ULED_pulsate(ILED_pulsate, T): Temperature Environmental policy ${}^{\circ }C$ 40 ${}^{\circ }C$ 60 ${}^{\circ }C$ 80 ${}^{\circ }C$ 3 mA 10 mA 20 mA 40 mA

Experiments A2-2 Italian (Italy)

Experiments A2-3 Italian (Italy) A.3 (1.5 pt) It shows the main points of ULED_pulsate, T) (A.2) on millimeter paper. Use one . Linear graph approximation to determine $\text{DeltaU}(I$) $\text{DeltaT}$: Linear graph approximation: The following information shall be provided: 3 mA 10 mA 20 mA 40 mA $\text{DeltaU}(I$) $\text{DeltaT}$

Experiments A2-4 Italian (Italy) Part B. Measurement of the Volt-Ampere characteristic of the LED per power current The following points are added: B.1 (1.5 pt) The following table shows the ILED_continuous (ULED_continuous) relationship at room temperature (continuous mode) on paper in millimetres: Complete the table with the corresponding values: The following information shall be provided: 3 mA 10 mA 20 mA 40 mA The following information shall be provided: $\text{DeltaU}$ TJ The following information shall be provided:

Experiments A2-5 Italian (Italy) B.2 (0.5 pt) The following information shall be provided: 3 mA 10 mA 20 mA 40 mA dI dU B.3 (1.5 pt) Reported in graph $\text{DeltaT}(P$) on millimeter paper: Complete the table with the corresponding values: The following information shall be provided: 3 mA 10 mA 20 mA 40 mA $\text{DeltaT}$ Resistenza termica lineare del LED $\text{DeltaT}$ P:

Experiments A2-6 Italian (Italy) Part C. Calculation of the LED drift current caused by temperature (1.5 points)) C.1 (1.5 pt) The following is the list of the following:

The following conditions shall apply:

Topic: Circuits, Thermodynamics, Electrostatics Metodi: Experimental Data Analysis, Graph Linearization, Physical Modeling Competenze: Experimental Data Analysis, Graph Linearization, Mathematical Modeling Objects: — Fonte: Testo (PDF) — p.1 Soluzione: Soluzioni (PDF)