use: the u0434u0432u0443u0445u043fu043eu043bu0443u043fu0435u0440u0438 - u043eu0434u043du043eu0435 u0432u044bu043fu0440u00a0u043cu043bu0435u043du0438u0435 u0434u043bu00a0 measurement and wireless systems. the essence of the u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0: in the absence of u0443u043fu0440u0430u0432u043bu00a0u044eu0449u0435u0433u043e u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 on withdrawal of the u043du0430u043fu0440u00a0u0436u0435u043du0438u0435 it without u0438u0441u043au0430u0436u0435u043du0438u00a0 passes out through the first operating the amplifier 4.with regard to the 9 u0443u043fu0440u0430u0432u043bu00a0u044eu0449u0435u0433u043e u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 positive u043fu043eu043bu00a0u0440u043du043eu0441u0442u0438 u043eu0442u043au0440u044bu0432u0430u044eu0442u0441u00a0 second transistor 11 and it is u0434u0432u0443u0445u043fu043eu043bu0443u043fu0435u0440u0438u043eu0434u043du043eu0435 u0432u044bu043fu0440u00a0u043cu043bu0435u043du0438u0435 input u0440u00a0u0436u0435u043du0438u00a0 filed between the first input and the general conclusion of the u0432u044bu043fu0440u00a0u043cu0438u0442u0435u043bu00a0 u0432u044bu043fu0440u00a0u043cu0438u0442u0435u043bu00a0. the first transistor 12 is opened in the u043fu043eu043bu00a0u0440u043du043eu0441u0442u0438 input u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 on withdrawal of 6 and closed with negative u043fu043eu043bu00a0u0440u043du043eu0441u0442u0438 this u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0.u0437.u043f.u0444 - lu 1, 2).
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