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:
May. 16, 1989
Filed:
May. 16, 1988
Applicant:
Inventor:
Stephen J Newton, Ann Arbor, MI (US);
Assignee:
BNR Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307443 ; 3072966 ; 307270 ; 307544 ; 307549 ; 323311 ; 361 92 ; 361101 ;
Abstract
A drive circuit for terminators in a SCSI (Small Computer Standard Interface) system comprises a bipolar transistor operating in saturated condition to keep the voltage drop to less than 200 millivolts. A second transistor serves to detect when, due to overcurrent conditions, the first transistor goes out off saturation and turns it off. Also provided is means for ensuring that the first transistor turns on before the second transistor on power-up.