6) Table of measurements
S = … μA/mW - the photodiode sensitivity (imprinted on the box),
λ = … nm,
Rsh = 1 kΩ (grid limit 500 μА); Rsh =500 Ω (Grid limit 1000 μА).
№ |
I1(LED), mА |
I2(PD), μА |
U, V |
PLIGHT, mW |
PE, mW |
η1(EN) , % |
η2(Q) , % |
1. |
5 |
|
|
|
|
|
|
2. |
10 |
|
|
|
|
|
|
3. |
15 |
|
|
|
|
|
|
4. |
20 |
|
|
|
|
|
|
5. |
25 |
|
|
|
|
|
|
6. |
30 |
|
|
|
|
|
|
7. |
35 |
|
|
|
|
|
|
8. |
40 |
|
|
|
|
|
|
9. |
45 |
|
|
|
|
|
|
10. |
50 |
|
|
|
|
|
|
7) Quantities calculation:
UCUT = … V;
RRES = … Ω;
8) Graph:
8.1 LED CVC |
8.2 Emission power and efficiencies |
|
|
9) Final results:
UCUT = … V; RRES = … Ω; η1(EN) (50mA) = … %; η2(Q) (50mA) = … %.
10) Conclusions:
11) Work done by: Work checked by: