Conversor de Indutância
De picohenries a henries
Required Parameters
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Quick Answer
1 H = 1000 mH = 1,000,000 µH = 10⁹ nH. Each prefix step is ×1000. RF inductors use nH, switching regulator inductors use µH, power inductors use mH, and transformer primaries use H.
Calculadora de Conversao de Indutancia
Converta entre unidades de indutancia.
Design Notes
Inductance selection for switching regulators: L = (Vin-Vout) × Vout / (Vin × fsw × ΔIL). Higher inductance reduces ripple but slows transient response. Always check saturation current and SRF in the datasheet.
Common Mistakes
- 1
Forgetting that every conductor has parasitic inductance (8-10 nH per cm of PCB trace).
- 2
Using an inductor above its self-resonant frequency (SRF) where it behaves as a capacitor.
- 3
Ignoring DC bias effects — inductance drops significantly as current approaches the saturation rating.
Knowledge Base
Quantos µH em um mH?
1.000 µH = 1 mH. Completo: 1 H = 1.000 mH = 1.000.000 µH = 10⁹ nH.
Unidades por aplicação?
nH: indutores RF. µH: reguladores chaveados. mH: crossover de áudio. H: transformadores.
O que é indutância parasita?
Todo condutor tem indutância: ~8–10 nH por cm de trilha PCB.
Valor típico para conversor buck?
1–2,2 µH (MHz), 4,7–22 µH (100–500 kHz), 100–470 µH (baixa frequência).
Frequência de autorressonância?
Onde a capacitância parasita do enrolamento ressona com a indutância. Acima, age como capacitor.
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