Albert Charles Bartlett
Encyclopedia
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.
Wembley
Wembley is an area of northwest London, England, and part of the London Borough of Brent. It is home to the famous Wembley Stadium and Wembley Arena...
. He had some correspondence with Wilhelm Cauer
Wilhelm Cauer
Wilhelm Cauer 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...
on the subject of filter
Electronic filter
Electronic filters are electronic circuits which perform signal processing functions, specifically to remove unwanted frequency components from the signal, to enhance wanted ones, or both...
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
Bartlett's Bisection Theorem is an electrical theorem in network analysis due to Albert Charles Bartlett. The theorem shows that any symmetrical two-port network can be transformed into a lattice network...
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.
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.