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:
Nov. 10, 1987
Filed:
Apr. 18, 1986
Shigeru Kashiwagi, Iwai, JP;
Abstract
A horizontal deflection circuit comprises an oscillator responsive to a horizontal sync pulse applied thereto for generating a first oscillation at the frequency of the sync pulse. A first switching device is responsive to a first half cycle of the first oscillation to cause a ramp current to be generated in a resonant circuit. The resonant circuit comprises a deflection coil and a first capacitor to produce a second, half-cycle oscillation immediately following a complete cycle of the first oscillation to define the retrace period of the circuit. A second switching device when enabled is responsive to a second half cycle of the first oscillation. The second switching device is enabled by operating a manually controlled switch. The enabled second switching device intermittently couples a second capacitor to the first capacitor of the resonant circuit to vary the retrace period.