The document outlines the objectives and operation of a Marx circuit within a high voltage engineering course at M.A.M. College of Engineering and Technology. It details the functioning of a 3-stage impulse generator circuit and the necessary conditions for consistent operation, including adjustments of sphere gaps. Specific attention is given to the configuration of charging and discharging components and their arrangement in the circuit.

1. Version: MAMCET_VP-1.1
M.A.M. COLLEGE OF ENGINEERING AND TECHNOLOGY
Siruganur, Tiruchirappalli – 621 105.
06/11/2024
Year & Sem. : IV Year (EEE) – VII Semester
Faculty : Mr.J.Nagendran
Regulation : R2017
Course Code : EE8701
UNIT : III
COURSE NAME
EE8701-High Voltage Engineering
J.Nagendran, AP/EEE, Department of Electrical and Electronics
Engineering, M.A.M. College of Engineering and Technology,
Siruganur, Tiruchirappalli – 621 105.

2. 06/11/2024
GENERAL OBJECTIVE
• To learn about the operation of Marx circuit
J.Nagendran AP/EEE, Department of Electrical and Electronics Engineering, M.A.M. College
of Engineering and Technology, Siruganur, Tiruchirappalli – 621 105.

3. 06/11/2024
SPECIFIC OBJECTVES
Students will be able to
1. Explain the operation of Marx circuit
J.Nagendran AP/EEE, Department of Electrical and Electronics Engineering, M.A.M. College
of Engineering and Technology, Siruganur, Tiruchirappalli – 621 105.

4. 06/11/2024
MARX CIRCUIT
J.Nagendran AP/EEE, Department of Electrical and Electronics Engineering, M.A.M. College
of Engineering and Technology, Siruganur, Tiruchirappalli – 621 105.
 Fig below shows a 3-stage impulse generator circuit due to Marx employing ‗b‘ circuit connections.
The impulse capacitors C1 are charged to the charging voltage V0 through the high charging
resistors Rcin parallel.
 When all the gaps G break down, the C1′ capacitances are connected in series so that C2 is charged
through the series connection of all the wave front resistances R1′ and finally all C1′ and C2 will
discharge through the resistors R2′ and R1′.
 Usually Rc>>R2 >>R1. If in Fig below the wave tail resistors R2′ in each stage are connected in
parallel to the series combination of R1′, G and C1′, an impulse generator of type circuit ‗a‘ is
obtained.
 In order that the Marx circuit operates consistently it is essential to adjust the distances between
various sphere gaps such that the first gap G1 is only slightly less than that of G2 and so on.

5. J.Nagendran AP/EEE, Department of Electrical and Electronics Engineering, M.A.M. College
of Engineering and Technology, Siruganur, Tiruchirappalli – 621 105.

6. J.Nagendran AP/EEE, Department of Electrical and Electronics Engineering, M.A.M. College
of Engineering and Technology, Siruganur, Tiruchirappalli – 621 105.
The wave front control resistance can have three possible locations
(i) entirely within the generator
(ii) entirely outside the generator
(iii)partly within and partly outside the generator.