This section of induction heating using low-voltage DC power supply 12-48V. Maximum current 20A, maximum power 1000W. This circuit can not only do the induction heating, the copper tube into the high-frequency transformer, is a inverter. To increase the heat sink using a customized substrate as thick as 8.5mm!Cooling capacity is very . Tested 53V power supply when working properly. Because of moderate power, can be used for DIY players do hardening, annealing and other heat treatment, Also can be used with a crucible melting gold, silver, copper, aluminum and other metals Uniform heating fast, very convenient. Using the pillars, fever smaller, more efficient. Although this circuit can tolerate 20-30A input current moment, do not 15A when safe work, you can easily an ammeter between the power supply and heating driver board always monitor the current overload. Notes: The kit contains a full driving circuit and brass need to bring their own power and cooling unit. The circuit board using double-sided fiberglass board, mainly copper traces are used to widen Use the entire back surface of the resonant circuit common, Continuous work, please a fan to blow down from above, To the resonance capacitors and other components cool. The use of switching power supply Please note due to high power are generally slow function, which just opened machine output voltage is slowly rising,while it is turned on the induction heating circuit if the voltage rises to 12V,because insufficient voltage can not to vibration,resulting in two simultaneous conduction mos tube so burned components. So the first will switching power supply voltage reaches 12V above and then access the induction heating circuit. The volume of the object being heated inside the heating coil can not 1/5 of the volume (if the heating cylinder, then heating coil diameter less than the diameter of 1/3),or it may be due to overload or burn out the power supply to the circuit. colour: black Material: metal size: 8.50 * 7.0cm Package Contents: 1 x module Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.