NOVELTY - Electrical dissociation and separation of water molecules in an electric field for the production of oxyhydrogen gas or for the recovery of hydrogen, comprises forming the electric field comprising a voltage source providing impulses in a high-voltage and high frequency range, at least one high-voltage circuit-forming electrode assembly having at least one anode and at least one cathode, and a voltage source providing direct current in a low voltage range, at least one low-voltage circuit-forming electrode assembly having at least one anode and at least one cathode.    USE - The method is useful for electrical dissociation and separation of water molecules in an electric field for the production of oxyhydrogen gas or for the recovery of hydrogen.    ADVANTAGE - The method is simple and controls the adjustment of the distance of anode and cathode of electrode assembly of low-voltage circuit, and anode and cathode of electrode assembly of high-voltage circuit, thus it improves electrical dissociation and separation of water molecules in the electric field.    DETAILED DESCRIPTION - Electrical dissociation and separation of water molecules in an electric field for the production of oxyhydrogen gas or for the recovery of hydrogen, comprises forming the electric field comprising a voltage source providing impulses in a high-voltage and high frequency range, at least one high-voltage circuit-forming electrode assembly having at least one anode and at least one cathode, and a voltage source providing direct current in a low voltage range, at least one low-voltage circuit-forming electrode assembly having at least one anode and at least one cathode, where the electrode assembly of the low-voltage circuit is exposed to electric field between the electrodes (41) of the electrode assembly of the high-voltage circuit. An electric field is formed between the electrodes of the electrode assembly of the low-voltage circuit due to the voltage source of the low-voltage circuit. The electric field is formed due to the voltage source of the high-voltage circuit between the electrodes of the electrode assembly of the high-voltage circuit, which does not minimize the other field. The voltage source of the high-voltage circuit and the voltage source the low-voltage circuit are electrically isolated from each other. INDEPENDENT CLAIMS are also included for:    (1) a device for electrical dissociation and separation of water molecules in an electric field, comprising the space-limiting walls in a medium density space, at least one controllable inlet opening for supplying water into the space, at least one controllable outlet opening (34) for discharging at least one reaction product from the space, a voltage source providing impulses in a high-voltage and high frequency range, at least one high-voltage circuit-forming electrode assembly having at least one anode and at least one cathode, and a voltage source providing direct current in a low voltage range, at least one low-voltage circuit-forming electrode assembly having at least one anode and at least one cathode;    (2) an electrical circuit for operating the device, which is used for the electrical dissociation and separation of water molecules in the electric field, comprising a series circuit including an ohmic resistance, an inductive storage element and a capacitive storage element, which are connected via a first switching device to a direct current source;    (3) operating an electrical circuit, comprising switching the first switching device and the second switching device such that voltage exceeding the voltage of the direct current source is inducible in the capacitive storage element, which corresponds to settling time point of 0.25 rad at least 1.41 times the value of the voltage of the direct current source;    (4) an electrical circuit for operating the device, which is used for the electrical dissociation and separation of water molecules in electric field, comprising a series circuit of an inductive storage element and a capacitive storage element;    (5) operating an electrical circuit, comprising switching the first switching device and electrically controllable switching device such that voltage exceeding the voltage of the alternating current source is inducible in the capacitive storage element, which corresponds to settling time point of 0.25 rad at least 1.41 times the value of the voltage of the alternating current source; and    (6) a system for electrical dissociation and separation of water molecules in electric field, preferably for the production of oxyhydrogen gas or to produce hydrogen, comprising at least one device for electrical dissociation and separation of water molecules in electric field and at least an electrical circuit for operating the device, which is operated by the above mentioned method.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of the electrode assembly of the device for electrical dissociation and separation of water molecules in an electric field in the assembled state.    Electrode assembly device (31)    Controllable outlet opening (34)    Sealing ring (39)    Electrode (41)    Threaded hole (50)