Balanced line type pulser circuit

Claim 2

A line type pulser circuit comprising: first, second and third terminals respectively adapted for connection to a source of a positive, a negative and a reference potential; first and second voltage charging means connected in the order named between said first and second terminals with an intermediate point therebetween connectable to said point of reference potential; first and second current charging means respectively connected in circuit with said first and second terminals; first and second pulse forming networks respectively connected in circuit with said first and second current charging means; a transformer having a primary winding and a secondary winding, one end of said primary winding being connected to said first pulse forming network, the other end of said primary winding being connected to said second pulse forming network, said primary winding further having an intermediate point thereon connected to said point of reference potential; a switching means, having a normally high impedance, connected to form a series path including said first and second pulse forming networks and said primary winding, said switching means being selectively operable for providing a low impedance at predetermined times in said series path; and means for connecting a utilization device in circuit with the secondary winding of said transformer.

Claim 3

The circuit according to claim 1 wherein said first and second voltage charging means respectively include a first and a second capacitor.

Claim 4

The circuit according to claim 2 wherein said first and second current charging means respectively include a first and a second inductor.

Claim 5

The circuit according to claim 3 wherein said switching means includes at least one gas discharge tube.

Claim 6

The circuit according to claim 3 wherein said switching means includes two gas discharge tubes serially connected to conduct current in the same direction with a point between said two tubes connected to said point of reference potential.

Claim 7

A line-type pulser circuit comprising: an energy supply source having first, second and third terminals, for providing a positive potential, a negative potential and a point of reference potential at said first, second and third terminals respectively; a first capacitive energy storage means connected between said first terminal and said point of reference potential; a second capacitive energy storage means connected between said second terminal and said point of reference potential; a first inductive energy storage means having one end thereof connected to said first terminal; a second inductive energy storage means having one end thereof connected to said second terminal; a switching means having a normally high impedance connected between the other ends of said first and second inductive energy storage means, said switching means being selectively operable for providing a low impedance path between said other ends of said first and second inductive energy storage means at predetermined times; a first and a second pulse forming network; a transformer having a primary and a secondary winding, said primary winding having an intermediate tap connected to said point of reference potential; said first and second pulse forming networks and the primary winding of said transformer being connected in circuit with said switching means; and means for connecting a utilization device in circuit with the secondary winding of said transformer; said utilization device being provided with a pulse of energy having a predetermined magnitude and a pulse width substantially dependent upon the operation of said switching means.

Claim 8

A line-type pulser circuit comprising: an energy supply source having first, second and third terminals, for providing a positive potential, a negative potential and a point of reference potential at said first, second and third terminals respectively; a first capacitive energy storage means connected between said first terminal and said point of reference potential; a second capacitive energy storage means connected between said second terminal and said point of reference potential; a first inductive energy storage means having one end thereof connected to said first terminal; a second inductive energy storage means having one end thereof connected to said second terminal; a switching means having a normally high impedance connected between the other ends of said first and second inductive energy storage means, said switching means being selectively operable for providing a low impedance path between said other ends of said first and second inductive energy storage means at predetermined times; a first and a second pulse forming network; a transformer having a primary and a secondary winding, said primary winding having an intermediate tap connected to said point of reference potential; said first and second pulse forming networks and the primary winding of said transformer being connected in circuit with said switching means; and means for connecting a utilization device in circuit with the secondary winding of said transformer; said utilization device being provided with a pulse of energy having a predetermined magnitude and a pulse width substantially dependent upon the operation of said switching means.

Claim 9

The circuit according to claim 5 wherein said switching means includes at least one gas discharge tube.

Claim 10

The circuit according to claim 5 wherein said switching means includes two gas discharge tubes serially connected to conduct current in the same direction with a point between said two tubes connected to said point of reference potential.

Claim 11

The circuit according to claim 5 wherein said energy supply source includes a three phase source of alternating current including a neutral terminal and a three phase full wave bridge rectifier circuit for providing said positive potential and said negative potential, with said reference potential corresponding to the potential at said neutral terminal.