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:
May. 07, 1985
Filed:
Jun. 19, 1984
Georg Haubner, D-8431 Berg, DE;
Hans-Dieter Schmid, D-8500 Nurnberg, DE;
Other;
Abstract
To provide operating energy to an ignition instant control circuit, for example a microprocessor (22) which controls operation of a semiconductor switching stage (20) without detracting from the energy output of the magneto coil (14), the energy in the voltage half-wave (negative) which does not supply ignition energy is used to charge a storage capacitor (24) to a charging network (25, 26), with a limit being determined by a Zener diode (29); the ignition instant is calculated by the control circuit, typically a microprocessor (22), which receives operating energy from across the capacitor, and a control input at a control terminal (30) which is connected to an insulated gate semiconductor switch, typically an MOS-FET (31) having its drain (D) connected to the control terminal (30) of the microprocessor and through a coupling capacitor to the output terminal (24a) of the energy supply circuit; its source (S) connected to that one of the ignition winding terminals (14a) which is common to the energy supply circuit and the terminal of the capacitor (24) remote from the output voltage supply terminal (24a); and the gate (G) of which is controlled through a coupling network (33, 34, 35, 36) connected across the primary winding (14) of the magneto.