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. 17, 1987
Filed:
Jan. 03, 1986
William F Marshall, Belmont, CA (US);
Theodore F Netoff, Oakland, CA (US);
Quantic Industries, Inc., San Carlos, CA (US);
Abstract
Electrical circuit continuity test apparatus for the high energy discharge circuitry of a firing unit couples to the stripline transmission line of the discharge circuitry but adds minimal inductance to the circuit. This is achieved by a coupling transformer having a core of high magnetic permeability alloy which loops around one of the strip conductors of the stripline. The primary winding, which couples into test circuit is merely another conductor wrapped around this core. The primary winding senses the reflected capacitive impedance of the discharge circuitry which includes an added capacitor to bypass the high energy switch of the discharge circuitry. Impedance sensing is accomplished by a resistance bridge driven by an oscillator and where imbalances indicating a defective circuit are sensed by a synchronous demodulator and a window comparator.