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Maybe even a bit more explanation is necessary. To use the others in a simulation, it is necessary to include a directive, such as '.param k = 1.3806503e-23'. I hope that's right.

On 23/04/2025 11:00, Tony Casey via groups.io wrote:

On 23/04/2025 09:55, Александр Бордодынов via groups.io wrote:

I had to replace the parameter k with k0, because in Qspice k is the Boltzmann constant. At tau=10ns, the counting time was 2.2 seconds. And everything was fine.

k is also defined as Boltzmann's constant in LTspice.

I should clarify that:

k is pre-defined in LTspice, but only in the waveform viewer, not as a design parameter. Of the defined "constants" (e, pi, k and q) mentioned in the Help, only pi can be used as a design constant.

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Regards,
Tony