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Master equation for operational amplifiers: stability of negative differential converters, crossover frequency and pass-bandwidth

Autor: Mishonov, T. M., Danchev, V. I., Petkov, E. G., Gourev, V. N., Dimitrova, I. M., Serafimov, N. S., Stefanov, A. A., Varonov, A. M.

Publikováno v: J. Phys. Commun. 3 035004 (2019) (open access)

The time dependent master equation from the seminal article by Ragazzini, Randall and Russell [J. R. Ragazzini, R. H. Randall and F. A. Russell, "Analysis of Problems in Dynamics by Electronic Circuits", Proc. of the I.R.E., Vol. 35, pp. 444--452, (1

Externí odkaz: http://arxiv.org/abs/1903.06918

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Simple do-it-yourself experimental set-up for electron charge $q_e$ measurement

Autor: Mishonov, T. M., Petkov, E. G., Mihailova, N. Zh., Stefanov, A. A., Dimitrova, I. M., Gourev, V. N., Serafimov, N. S., Danchev, V. I., Varonov, A. M.

Publikováno v: Eur. J. Phys. 39, 065202 (2018)

A simple experiment for the electron charge $q_e$ measurement is described. The experimental set-up contains standard electronic equipment only and can be built in every high-school lab all around the world with pocket money budget for several days.

Externí odkaz: http://arxiv.org/abs/1807.04688

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Determination of Boltzmann constant by equipartition theorem for capacitors

Autor: Mishonov, T. M., Gourev, V. N., Dimitrova, I. M., Serafimov, N. S., Stefanov, A. A., Petkov, E. G., Varonov, A. M.

A new experimental set-up for Boltzmann constant measurement is described. Statistically averaged square of voltage $\left$ is measured for different capacitances $C$. Boltzmann constant is determined by the equipartition theorem $C\left

Externí odkaz: http://arxiv.org/abs/1707.04482

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An undergraduate laboratory experiment on measuring the velocity of light with a catastrophic machine

Autor: Mishonov, T. M., Varonov, A. M., Maskimovski, D. D., Manolev, S. G., Gourev, V. N., Yordanov, V. G.

Publikováno v: Eur. J. Phys. 38 025203 (2017)

An experimental setup for electrostatic measurement of $\varepsilon_0$, separated magneto-static measurement of $\mu_0$ and determination of the velocity of light $c=1/\sqrt{\varepsilon_0 \mu_0}$ according to Maxwell theory with percent accuracy is d

Externí odkaz: http://arxiv.org/abs/1605.05218

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