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What is exactly modeled by 'transit time' in SPICE diode model?

The total capacitance of a diode at can be broken down into two parts: the depletion capacitance and diffusion capacitance. Transit time's only purpose is to provide an easy way to calculate the ...
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plot the max slopes of Voltage-Transfer characteristics in ngspice

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SPICE Simulator at Linux

There is also circuitjs written in javascript which you can use online or via a standalone version here. Screenshot:
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Diode SPICE data accuracy at high frequencies?

You cannot extrapolate Spice data where geometric impedances affect the conductance and junction capacitance assumptions in the datasheet. "Measured at a LO frequency of 9.375 GHz, with an IF ...
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4 votes

Failed to find DC operating point for AC analysis LTspice

May I direct your attention to the second graph (updated version, simulation with positive feedback). I don`t know if you are surprised about the results - because in reality such a circuit cannot and ...
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Failed to find DC operating point for AC analysis LTspice

I made some silly connections in my circuit. It works now. Thank you, everyone. *The bottom one would not work in reality.
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Failed to find DC operating point for AC analysis LTspice

Judging from the apparent topology of the circuit drawn around the opamp, I guess you are trying to make an inverting amplifier. If so, it looks like you simply connected wires wrong. The input ...
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How to simulate an AC line filter in LT Spice

You have to define LINK FACTOR AS K1 L1 L2 1
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