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Example Ratio 2 = 6.021 dB
Voltage: — Power: . Power goes as voltage squared, which is the whole reason for the 20 against the 10. A bench dB question is usually absolute, not relative — "what's 30 dBm in watts" — which Absolute level below answers directly.
What you enter
AC voltage converterSine wave assumed. — —
Antenna length— the element is then a fraction of that wavelength, trimmed by a shortening factor k: for a quarter-wave. Two things trip people up. A λ/4 whip is…
Operational amplifierNon-inverting: — Inverting:
Slew rate & bandwidthFull-power bandwidth: — the highest frequency at which the op-amp can still swing the whole amplitude. Past it the output stops following and simply…
Speaker crossover (1st order)A series capacitor keeps the lows out of the tweeter; a series inductor keeps the highs out of the woofer. First order = 6 dB/octave each side, crossing…
Decoupling capacitorA reservoir close to the chip supplies the current the rail cannot deliver fast enough: , and the capacitor's own must stay below or it drops the…
Energy storageCapacitor: — Inductor:
Heatsink / thermal— the heatsink only gets what is left of the budget after the package and the interface have taken theirs.