Established in 1990, Fadong Power Co., Ltd. is a professional China marx generator manufacturer and supplier of in the emergency power supply industry. We not only specialize in manufacturing different kinds of generators, but also in motors, engines, diesels, gearmotors and other power supply products. We also have more than 100 series of equipment to support and check our products, such as VPI equipment, auto painting lines, auto testing systems and CAD systems. We warmly welcome every customer to cooperate with us on the basis of mutual benefit, and hope to be your faithful friend and best partner. Our custom marx generators has obtained the certifications of ISO9001-2000, GS/TUV, CE, VL, EPA, QHS, SON, CAP and SRS.

This is a picture of my almost finished, 10 stage, Marx Generator (I still need to make a base for it). The vertical supports are 5' X 4" X 3/4" ultra high molecular weight polyethylene boards. Each board was drilled and tapped to accept ten 1.5" lengths of 1/4-20 threaded stainless steel rod. The rods hold the inductors and steel balls which make up the spark gaps. The boards are separated by the 20 stacks of three door-knob capacitors. One board was tapped with twenty 1/4-20 holes, which accept the 1/4-20 studs on one side of the capacitor stacks. The other board was drilled with twenty 1/4" holes which accept twenty 1" X 1/4" nylon machine screws which hold the threaded boss on the other side of the capacitor stacks.
Here is a picture of the generator mounted in a base made from two 3/4" thick 16" X 20" HDPE boards separated by four 14" lengths of 2.5" OD polycarbonate tubing all held together with 12"-13 threaded fiberglass rod, delrin swivel feet and plastic ball knobs. I have also added my Tesla coil toroid to the top, to help cut down on corona losses.

The Marx generator was conceived by E. Marx in 1924. The scheme involves charging a set of capacitors in parallel and discharging them in series. Thus the operation takes a DC voltage and steps it up by a factor roughly equivalent to the number of capacitors and 'sub-gaps' that act as switches to connect the capacitor sections together producing a pulsed output of extremely high voltage, energy and short time frame. The DemoLab version is rated at 30KVDC input however we are running it at about 14KVDC. Since there are 10 capacitor sections, our ultimate voltage amplification should be a pulse of about 140KV. By measuring our spark gap for the maximum spark attainable, the implied voltage is closer to about 102KV. The bottom gap is set slightly less than the upper gaps and is the initiatory gap. The UV produced from the first gap helps stabilize and initiate the succeeding gaps to fire within a small time frame. The sequence of the first gap firing the second and the second cascading to fire the third etc... is called "erecting". The erected capacitance is equal to the stage capacitance divided by the number of stages (sub-gaps). Each capacitor in our bank is about 2 nano Farad. So, the stored energy is about .225 J per section, for a total of 2.25 J for the final discharge.

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