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:
Mar. 07, 1978
Filed:
Mar. 07, 1977
Applicant:
Inventors:
Grant Edgar Ritchie, Edinburgh, SC;
John Malcolm Morrison, Edinburgh, SC;
Assignee:
Ferranti Limited, Hollinwood, EN;
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323-9 ; 307237 ; 323 25 ; 361 87 ;
Abstract
Currents greater than predetermined amount are prevented within a circuit arrangement by connecting the electrical supply to at least one conductor via a diode and a transistor, with the diode and the base-collector junction of the transistor in series between the conductor and the supply, and with the emitter connected via a resistor to a point maintained at an appropriate reference potential level, the transistor being in a grounded-base configuration, with the maximum possible collector current defined by the maximum possible emitter current.