Albert Charles Bartlett

Albert Charles Bartlett was an electrical engineer working for the General Electric Company in Wembley. He had some correspondence with Wilhelm Cauer on the subject of filter designs.

He published a treatment of geometrically symmetrical 2-port networks in 1927 and is responsible for Bartlett's bisection theorem which shows that any symmetrical network can be transformed into a symmetrical lattice network.

He also patented the idea of using the method of an active amplifier with "negative resistance" to cancel the inductance of a telephone line.

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