Is aonad cumhachta é dBW nó bhata deicibeil ar scála deicibeil , agus tagairt dó do 1 bhata (W).
Tá an chumhacht i vata deicibeil ( P (dBW) ) cothrom le 10 n-uaire logarithm bonn 10 den chumhacht i vata ( P (W) ):
P (dBW) = 10 ⋅ log 10 ( P (W) / 1W)
Tá an chumhacht in vata ( P (W) ) cothrom le 10 arna ardú ag an gcumhacht i vata deicibeil ( P (dBW) ) arna roinnt ar 10:
P (W) = 1W ⋅ 10 ( P (dBW) / 10)
Tá 1 bhata cothrom le 0 dBW:
1W = 0dBW
Tá 1 milliwatt cothrom le -30dBW:
1mW = 0.001W = -30dBW
Tiontaigh dBW go dBm, bhata, milliwatt.
Iontráil an chumhacht i gceann de na boscaí téacs agus brúigh an cnaipe Tiontaigh :
Conas cumhacht i dBW a thiontú go vata (W).
Tá an chumhacht in vata ( P (W) ) cothrom le 10 arna ardú ag an gcumhacht i dBW ( P (dBW) ) arna roinnt ar 10:
P (W) = 1W ⋅ 10 ( P (dBW) / 10)
Mar shampla: cad é an chumhacht i vata do thomhaltas cumhachta 20dBW?
Réiteach:
P (W) = 1W ⋅ 10 (20dBW / 10) = 100W
Conas cumhacht i vata (W) a thiontú go dBW.
Tá an chumhacht i dBW cothrom le logarithm bonn 10 na cumhachta i vata (W):
P (dBW) = 10 ⋅ log 10 ( P (W) / 1W)
Mar shampla: cad é an chumhacht i dBW do thomhaltas cumhachta 100W?
Réiteach:
P (dBW) = 10 ⋅ log 10 (100W / 1W) = 20dBW
Conas cumhacht i dBW a thiontú go dBm.
Tá an chumhacht i dBm cothrom le logarithm bonn 10 na cumhachta i vata (W):
P (dBm) = P (dBW) + 30
Mar shampla: cad é an chumhacht i dBm do thomhaltas cumhachta 20dBW?
Réiteach:
P (dBm) = 20dBW + 30 = 50dBm
Conas cumhacht i dBm a thiontú go dBW.
Tá an chumhacht i dBW ( P (dBW) ) cothrom le 10 arna ardú ag an gcumhacht i dBm ( P (dBm) ) arna roinnt ar 10:
P (dBW) = P (dBm) - 30
Mar shampla: cad é an chumhacht i vata do thomhaltas cumhachta 40dBm?
Réiteach:
P (dBW) = 40dBm - 30 = 10dBW
| Cumhacht (dBW) | Cumhacht (dBm) | Cumhacht (Watt) |
|---|---|---|
| -130 dBW | -100 dBm | 0.1 pW |
| -120 dBW | -90 dBm | 1 pW |
| -110 dBW | -80 dBm | 10 pW |
| -100 dBW | -70 dBm | 100 pW |
| -90 dBW | -60 dBm | 1 nW |
| -80 dBW | -50 dBm | 10 nW |
| -70 dBW | -40 dBm | 100 nW |
| -60 dBW | -30 dBm | 1 μW |
| -50 dBW | -20 dBm | 10 μW |
| -40 dBW | -10 dBm | 100 μW |
| -30 dBW | 0 dBm | 1 mW |
| -20 dBW | 10 dBm | 10 mW |
| -10 dBW | 20 dBm | 100 mW |
| -1 dBW | 29 dBm | 0.794328 W. |
| 0 dBW | 30 dBm | 1.000000 W. |
| 1 dBW | 31 dBm | 1.258925 W. |
| 10 dBW | 40 dBm | 10 W. |
| 20 dBW | 50 dBm | 100 W. |
| 30 dBW | 60 dBm | 1 kW |
| 40 dBW | 70 dBm | 10 kW |
| 50 dBW | 80 dBm | 100 kW |
| 60 dBW | 90 dBm | 1 MW |
| 70 dBW | 100 dBm | 10 MW |
| 80 dBW | 110 dBm | 100 MW |
| 90 dBW | 120 dBm | 1 GW |
| 100 dBW | 130 dBm | 10 GW |
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