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:
Jun. 27, 1989
Filed:
Dec. 15, 1987
Vanni Poletto, Camino, IT;
SGS Microelettronica SpA, Agrate Brianza, IT;
Abstract
A circuit, which may be monolithically integrated, for the generation of current pulses of extremely short duration, includes a differential input structure with first and second PNP transistors. The circuit also includes third, fourth and fifth NPN transistors. The emitter of the third transistor is connected to the negative terminal of a supply voltage source via a first resistor, and to the emitter of the fourth transistor via a first diode and to the emitter of the fifth transistor via a second resistor. The collector of the third transistor is connected to the collector of the second transistor and to the base of the fifth transistor, via a second diode, and to the base of the fourth transistor. The base terminal of the third transistor is connected to the emitter of the fifth transistor via a third resistor and to the negative terminal of the supply voltage source via a capacitor. The collector of the fifth transistor is connected to the positive terminal of the supply voltage source. The collector of the fourth transistor is used as an output terminal of the circuit.