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. 16, 2010
Filed:
Sep. 25, 2008
Pete Ward Smith, Southlake, TX (US);
James Earl Huffman, Keller, TX (US);
David Lee Sykes, Keller, TX (US);
Clyde Ray Calcote, Richardson, TX (US);
Pete Ward Smith, Southlake, TX (US);
James Earl Huffman, Keller, TX (US);
David Lee Sykes, Keller, TX (US);
Clyde Ray Calcote, Richardson, TX (US);
PulseTech Products Corporation, Southlake, TX (US);
Abstract
A circuit includes a pulse transformer having primary and secondary windings. An oscillating waveform is applied to the primary winding to induce an oscillating waveform at the secondary winding. A transistor in series with a first resistor is coupled between the secondary winding and the ground. An R-C network formed by a second and a third resistor and a capacitor is coupled to a base junction of the transistor. The R-C network causes a slow, tapered linear pinch off of the transistor's conductance to enable the circuit to output a triangular waveform, which is characterized by a relatively short linear rise time followed by a substantially long linear fall time. The R-C network is coupled to the secondary winding via a first and a second diode, respectively.