Albert Charles Bartlett was an electrical engineer working for the

General Electric Company The General Electric Company (GEC) was a major British industrial conglomerate involved in consumer and defence electronics, communications, and engineering. The company was founded in 1886, was Britain's largest private employer with over 250 ...

Wembley Wembley () is a large suburbIn British English, "suburb" often refers to the secondary urban centres of a city. Wembley is not a suburb in the American sense, i.e. a single-family residential area outside of the city itself. in north-west Londo ...

. He had some correspondence with

Wilhelm Cauer Wilhelm Cauer (24 June 1900 – 22 April 1945) was a German mathematician and scientist. He is most noted for his work on the analysis and synthesis of electrical filters and his work marked the beginning of the field of network synthesis. Prio ...

on the subject of

filter Filter, filtering or filters may refer to: Science and technology Computing * Filter (higher-order function), in functional programming * Filter (software), a computer program to process a data stream * Filter (video), a software component tha ...

designs. He published a treatment of geometrically symmetrical 2-port networks in 1927 and is responsible for

Bartlett's bisection theorem Bartlett's bisection theorem is an electrical theorem in network analysis attributed to Albert Charles Bartlett. The theorem shows that any symmetrical two-port network can be transformed into a lattice network. The theorem often appears in fil ...

which shows that any symmetrical network can be transformed into a symmetrical lattice network. Belevitch, V, "Summary of the History of Circuit Theory", ''Proceedings of the IRE'', vol 50, p850, May, 1962. He also patented the idea of using the method of an active amplifier with "negative resistance" to cancel the inductance of a telephone line.

Publications

Journal articles

*Bartlett, AC, "An extension of a property of artificial lines", ''Phil. Mag.'', vol 4, p902, November 1927. *Bartlett, AC, "A standard of small capacity differences", ''J. Sci. Instrum.'', vol 8, No 8 (August 1931), pp260–262. *Bartlett, AC, "Note on the theory of screened impedances in A.C. bridges with the Wagner earth",''J. Sci. Instrum.'', vol 6, No 9 (September 1929), pp277–280. *Bartlett, AC, "A small peak voltmeter and an application", ''J. Sci. Instrum.'', vol 8, No 9 (June 1924), pp281–284.

Patents

*Bartlett, AC, ''Line balance for loaded telephone circuits'', GB1767199, filed 30 Mar 1925, issued 24 Jun 1930. *Bartlett, AC, ''Improvements in Electric Discharge Tubes'', GB239736, filed 30 Oct 1924, issued 17 Sept 1925. *Bartlett, AC, ''An improved method for reducing the self-inductance of electric circuits'', GB278036, filed 25 May 1926, issued 26 Sep 1927.

Books

*Bartlett, AC, ''The theory of electrical artificial lines and filters'', 1930, Chapman & Hall (London), LCCN 30030668.

References

British electrical engineers British electronics engineers Year of birth missing Year of death missing Place of birth missing Place of death missing {{electronics-stub