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:
Dec. 08, 1992
Filed:
Jul. 09, 1991
Applicant:
Inventor:
Tawfic S Nashashibi, Egham, GB;
Assignee:
Link Analytical Limited, High Wycombe, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257273 ; 257270 ; 257212 ;
Abstract
An Injector Junction Field Effect Transistor (IJFET) is disclosed which, in addition to having two gates (G1, G2) a drain (D) and a source (S), also has an injector (I). The device may be used as a high impedance charge or current amplifier in, for example, an x-ray fluorescence device. On applying current to the injector carriers are introduced into the channel of the device allowing a small gate leakage current to flow to restore charge to the input. A small restore current is therefore controllable by low impedance injector circuits.