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. 23, 1976
Filed:
May. 24, 1972
Flemming Thorsoe, Augustenborg, DK;
Danfoss A/S, Nordborg, DK;
Abstract
The invention relates to a phase initiation control circuit for a three phase system which comprises three sets of blocking elements of the TRIAC type. Regulation is achieved by displacing the moment at which a control impulse is sent to each blocking element to render it conducting for the remainder of the half cycle. Associated with each phase is a continuously chargeable capacitor which, upon a predetermined voltage being reached, discharges to produce a control impulse and also is completely discharged through the collector emitter path of a junction transistor at the zero cross-over of the particular voltage phase. The capacitors are charged through charging transistors and are discharged to produce said control impulses through unijunction transistors and impulse transformers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile