An inverse problem of temperature estimation for the combination of the NTC and PTC nonlinear resistances

The problem of finding of analytical closed form solution to the ambient temperatures nonlinear functional equation by using the Perovich's Special Trans Functions Theory - STFT, is studied in some detail. Structure of the STFT solutions, numerical results and graphical simulations confirm the validity of the basic principle of the STFT. In addition, the estimated temperature intervals for strongly determined values of the equivalent resistances of the nonlinear structures are given, as well.