The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1977
Filed:
Jan. 09, 1976
Douglas Stanley Larner, Maidenhead, EN;
Abstract
Bipolar digital repeaters are commonly fed with a constant d.c. supply but with the known circuit, the mode of use of transformer-coupled output stage places a limitation on the voltage-amplitude of the output pulses. The 120 M bit/s data transmission system may occasionally require to have its repeaters operate over line-sections of exceptionally high attenuation. The proposed circuit is intended to meet these requirements, using modified connections to the transformer (3 equal windings) and minimal additional components, the maximum peak-output voltage is consequently doubled with no increase in the constant current supply. The new technique, involving a serial connection, ensures that all of the supply current becomes available for the means current in pulses of each polarity separately instead of the two polarities together.