| 摘要 |
Process and device for treating water with a pulsed electromagnetic field in which a magnetic field is generated over a section of the water-bearing tube (15) with both ends via induction coils (16), the intensity of which fi eld can be set by open-loop control of the frequency of impulses which are g enerated in an integrated circuit IC 2. The intensity is controlled by close d-loop control by limiting the frequency with a flow meter (8) as a function of the water throughput rate or via a fixable potentiometer (7) as a functi on of the mean water consumption and the tube diameter, wherein the changing frequency of the sum signal which is formed in IC 2 and is generated from t he signal of a ramp generator (4), the frequency of which is varied by a sca nner (6) via a counter component (5), and the signal of a voltage-dependent generator (3), is a first signal under open-loop frequency control, which is transformed via a transistor bridge circuit (9) and a push-pull amplifier ( 10) and is subsequently in turn added to a signal from a voltage converter ( 11) having an attached power unit (12). The signal prepared is passed to the inlet of an amplifier stage (13) and from there as alternating voltage, whi ch here is utilized as ~push-pull voltage~, is applied to the windings of th e induction coils (16) which have the same direction of action, the electrom agnetic field of which alters with the physical properties of the transmitte d frequency, wherein the time change of the voltage per pulse is at least 20 volts per microsecond. The expression ~push-pull voltage~ is intended to ex press the fact that the sign changes in polarity (as in alternating voltage) .
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