Theory of the negative impedance converter

This paper presents a relatively new approach to the solution of negative impedance problems related to vacuum tube circuits. The approach consists of reducing the vacuum tube circuit of a device for producing negative impedance to an electrically equivalent four-terminal network from which the stab...

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Published in:Bell System Technical Journal 1951-01, Vol.30 (1), p.88-109
Main Author: Merrill, J. L.
Format: Article
Language:English
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description This paper presents a relatively new approach to the solution of negative impedance problems related to vacuum tube circuits. The approach consists of reducing the vacuum tube circuit of a device for producing negative impedance to an electrically equivalent four-terminal network from which the stability and the operation of the device as an element in a system can be predicted accurately. The theory is of interest at this time because a negative impedance repeater, the E1, has recently been developed for use in the exchange plant. It has been found that such a repeater can be placed in series with a voice frequency telephone line to provide transmission gains which are ample for many purposes.
doi_str_mv 10.1002/j.1538-7305.1951.tb01368.x
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title Theory of the negative impedance converter
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