Table 4 The cost of fabricating a phototransistor-based pyranometer
Items | Price (US dollar) |
|---|---|
Phototransistor BP103 | 0.43 |
Dual operational amplifier LM358 | 0.43 |
5 KΩ ¼ W Pot-resistor | 0.66 |
27 KΩ ¼ W resistor | 0.11 |
1 KΩ ¼ W resistor | 0.11 |
10 pF non-polarized capacitor | 0.11 |
Copper board (4 cm × 4 cm) | 0.43 |
Packaging | 2.17 |
Total cost | 4.45 |