... single panel. 2. Frequency-sweep zero voltage start, high success rate, no shock; 3. Automatic resistance adjustment, ... Highly integrated in controlling circuit, free of use of high-rate starter and relay loop, fairly low failure ... as IF power supply for induction heating3) Pouring action driven mechanically or oil hydraulic4) High efficiency, little noise, ... , such as Cu and Al 1T Induction Furnace