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How do I find a Diode with a 0.7 V Drop .??? |
October 04, 2020 |
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Hi @JerryAm, look at this blog post: https://www.circuitlab.com/blog/2020/08/10/ideal-diodes-in-circuitlab/ And try this simulation in particular: There are two diode simulation models in CircuitLab: - a "real" PN-junction diode - an "ideal" diode which For a real PN diode, there's a relationship between current and voltage, roughly $$I_D \propto e ^ { \frac {V_D} {25 \ \text{mV}}}$$ It just turns out that for a wide range of typical currents and typical diodes, you'll get $V_D \approx 0.7 \pm 0.1$, but this is just a convenient approximation. |
by mrobbins October 05, 2020 |
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