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A programmable bias source for binary Josephson junction arrays.

Patel, P; Williams, J M; Janssen, T J B M (2001) A programmable bias source for binary Josephson junction arrays. In: BEMC 2001- 10th British Electromagnetic Measurement Conference, 6-8 November 2001, Harrogate, UK.

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A bias source has been designed and constructed for use with a new generation of so-called binary Josephson junction arrays (JJA). Each segment or bit of this JJA has to be biased individually. The design consists of a motherboard on which up to fifteen separate bias sources can be plugged in. Each bias source is a fast (200 ns settling time) programmable precision current source in a screened enclosure. An optical interface provides electrical isolation of the source from the controlling computer. Waveform data can be loaded into memory and played back to produce the desired waveform. In this paper we will discuss the electronic design and report on the performance specifications.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: Electromagnetics
Electromagnetics > Electrical Quantum Standards
Last Modified: 02 Feb 2018 13:17
URI: http://eprintspublications.npl.co.uk/id/eprint/2167

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