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High frequency transformer modeling
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002This paper presents a technique of indirect measurement of linear and nonlinear elements of a wideband transformer using the reflection coefficient technique with the scattering matrix (S-parameters). The S-parameter frequency domain measurement method of the wideband RF transformer and conversion into a discrete model is discussed. The leakage and the
J. Biernacki, D. Czarkowski
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Mixed Time-Frequency Signal Transformations
2000Mixed time-frequency representations are transformations of time-varying signals that depict how the spectral content of a signal is changing with time. They are multidimensional, timevarying extensions to conventional Fourier transform spectral analysis of signals and systems.
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A New Frequency Transformer or Frequency Changer
Proceedings of the Institute of Radio Engineers, 1927Alternating current having a frequency which is any fractional value of the frequency of a supplied current, can be obtained by means of a triode oscillator. The phenomenon seems to be due to the "attraction" of two nearly equal frequencies occurring in the triode circuit and to the non-linear characteristic of a triode.
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2002
The invention relates to a medium frequency transformer, which for example, insulates primary DC intermediate circuits from secondary DC intermediate circuits in a DC/DC transformer. The inventive medium frequency transformer has a two-part core, in addition to a primary winding and a divided secondary winding, a first and a second part of the divided ...
DAIMLERCHRYSLER RAIL SYSTEMS +6 more
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The invention relates to a medium frequency transformer, which for example, insulates primary DC intermediate circuits from secondary DC intermediate circuits in a DC/DC transformer. The inventive medium frequency transformer has a two-part core, in addition to a primary winding and a divided secondary winding, a first and a second part of the divided ...
DAIMLERCHRYSLER RAIL SYSTEMS +6 more
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Low-frequency intervalve transformers
Institution of Electrical Engineers - Proceedings of the Wireless Section of the Institution, 1926The theoretical expression for the voltage amplification of a valve followed by a transformer is developed in its simplest possible terms, and various particular cases are considered. The importance of low leakage inductance for the uniform amplification of the higher frequencies is emphasized.
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Multiple Frequency Impedance Matching by Frequency Transformation
2019The purpose of this chapter is to bring to the attention of students and teachers of circuit theory, as well as of practising design engineers, a recently reported technique for impedance matching at multiple frequencies. This will be done through a specific example, namely that of design of a lumped network for matching a given load resistance RL to a
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Time and frequency domain connectedness analysis of the energy transformation under climate policy
Technological Forecasting and Social Change, 2022Chi-Wei Su, Xuefeng Shao
exaly