Patent ID: 6809563
Filing Date: 2004-10-26
Classification: H03K

Abstract:
Fast scanning voltage ramp generator comprising:at least one chain of N two-pole avalanche transistors in series and a set of N+1 power supply elements in series, where N is an integer number&gE;2, an emitter and base of each transistor being connected to each other and also being connected to a collector of a next transistor in the chain; an input circuit generating a voltage pulse connected to one of two transistors at ends of the chain, wherein the set of N+1 power supply elements in series is formed by a set of N+1 zener diodes in series between a high voltage power supply and ground, and wherein the collector and the emitter of each transistor in the chain are connected to a cathode and to an anode of a corresponding zener diode through at least one resistance, and are connected to the ground through a corresponding capacitor.