Electronic hard-water antiscaling device

The utility model provides an electronic hard water scale prevention device, which is characterized in that after voltage transforming, rectifying and wave-filtering of a 220 V power supply, one route is input into a power amplifying circuit, and the other route is connected with the VDD terminal of a single chip microcomputer IC through a voltage stabilizing tube D3, and after treated by the single chip microcomputer IC, two routes are output from an I/O port, wherein one route is input to four light emitting diodes via RB4 to RB7, and the other route outputs square-wave signal whose frequency random changes from 100 KHz to 10 KHz to a power amplifier. The power amplifier consists of transistors VT1 to VT4, an inductance, and a capacitance. The output terminals of the power amplifier are connected with four helical antennas 1 to 4 which are entwined on a water pipe. The amplified long-wave radio electromagnetic wave acts on the water supply system, thus the hard water impurity molecular in the hard water such as calcium salt, magnesium salt, etc., carry charges in same polarity, and the calcium bicarbonate in the boiled water is incapable to combine mutually, calcium carbonate is formed and precipitated, so scale can not be produced and attach on the heating surface of a boiler (or other containers).