Decibelm W ची गणना कशी करावी
Decibelm W म्हणजे काय?
Converts between power ratios and decibel scale for audio, RF, and other applications. Logarithmic scale matches human perception.
सूत्र
dBm = 10 × log10(P ÷ 0.001)
- P
- P value — Variable used in the calculation
चरण-दर-चरण मार्गदर्शक
- 1dBm = 10 × log10(P ÷ 0.001)
- 2dBW = 10 × log10(P)
- 3Reverse: power (watts) = 10^(dBm ÷ 10) ÷ 1000
- 4Every 3 dB ≈ 2× power
- 5Every 10 dB ≈ 10× power
Worked Examples
इनपुट
Power 1W
परिणाम
30 dBm
Common Mistakes to Avoid
- ✕Confusing dBm (power) with dBV (voltage) with dBu (relative to 0.775V)
- ✕Adding dBm values instead of multiplying power
Frequently Asked Questions
Why use decibels instead of watts?
Logarithmic scale compresses large ranges (1W to 1MW becomes 30 dBm to 60 dBm), easier comparison.
What's typical dBm for audio and RF?
Audio -20 to +4 dBu typical; WiFi transmit +17 to +30 dBm; cellular -30 to +33 dBm.
गणना करण्यास तयार आहात? विनामूल्य Decibelm W कॅल्क्युलेटर वापरून पहा
ते स्वतः वापरून पहा →