WEEK 4
Activity :
Title of project and draft of my project
Objective :
Title of project and draft of my project
Objective :
- To show the draft of my project.
- to discuss about the project with the supervisor.
Content:
Marx Generator Based High Voltage using MOSFET
The project
is designed to generate high voltage DC using Marx generator principle by using
MOSFET and capacitor stacks. The Marx Principle was developed by Erwin Otto Marx.
Its principle is to generate a high voltage pulse using a number of capacitors
in parallel to charge up during the on time and then connected in series to develop
higher voltage during the off period. This principle is used to generate
voltages in the range of KV’s in real-time for testing the insulation of the
electronic appliances like transformers and the insulation of the power
carrying lines.
This demo project
consists of 4 stages and each stage is made of one MOSFET, two diodes, and one
capacitor. MOSFET is used as a switch; diodes are used to charge the capacitor
at each stage without power loss. A 555 timer generates pulses for the
capacitors to charge in parallel during ON time. During OFF tine of the pulses
the capacitors are brought in series with the help of MOSFET switches. Finally,
number of capacitors used in series (4 in our project) adds up the voltage to
approximately 3 (4 capacitors-1 capacitor) times the supply voltage. This
system structure gives compactness and easiness to implement the total system
from a DC supply of 12V to get approximately (30V-36V).
This
concept in future can be extended to Generate High voltages (KV) using more
number of capacitors. This technique is adopted for insulation testing of the
electronic components, wires, gadgets etc.
BLOCK DIAGRAM

CONCLUSION
For this week,I have done study roughly about development of Marx Generator.The concept is charging the capacitors in parallel,then connects all of them in series to get the result of n multiply of input supply.Based on this information,I come up with my draft of the project.
CONCLUSION
For this week,I have done study roughly about development of Marx Generator.The concept is charging the capacitors in parallel,then connects all of them in series to get the result of n multiply of input supply.Based on this information,I come up with my draft of the project.