Excerpt from General Design of Critically Damped Galvanometers
While here no consideration 18 given to self-induced voltage, which may during a part of the impulse be of the same order of magnitude as e, it may easily be shown that no appreciable error is introduced on this a... ccount, unless the self - inductance is so large that the electrical time constant of the circuit is appreciable in comparison with the time of the throw of the moving system.
After the impulse the right-hand members of equations and (10) are zero, so that for each of the three cases the equation of the motion of the moving system is.
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