24-06-2014, 03:11 PM
HIGH VOLTAGE DC BY MARX GENERATORPRINCIPLES
HIGH VOLTAGE.pptx (Size: 495.56 KB / Downloads: 25)
Project overview
The aim of this project is High voltage Marx generator implementation using MOSFET/IGBT stacks.
The Marx generator is composed of 4 stages and each stage is made of MOSFET/IGBT stacks, two diode stacks, and capacitors. MOSFET/IGBT stack is used as a single switch.
Diode stacks and inductors are used to charge the high voltage capacitor at each stage without power loss.
The proposed Marx generator implementation uses MOSFET/IGBT stack with a simple 555 driver.
This system structure gives compactness and easiness to implement the total system from a DC supply of 12V to get 48V.
Marx generator principle
A number of capacitors are charged in parallel to a given voltage, V, and then connected in series by spark gap switches, ideally producing a voltage of V multiplied by the number, n, of capacitors (or stages).
Due to various practical constraints, the output voltage is somewhat less than n×V.
555 TIMER
The 555 Timer IC is an integrated circuit (chip) implementing a variety of timer and multivibrator applications.
The original name was the SE555 (metal can)/NE555 (plastic DIP) and the part was described as "The IC Time Machine".
Depending on the manufacturer, the standard 555 package includes over 20 transistors, 2 diodes and 15 resistorson a silicon chip installed in an 8-pin mini dual-in-line package (DIP-8)