If you need power supply please buy it separately Product ID 1196806Here is the reference instruction Click to openFeature This section of induction heating using low voltage DC power supply 12 48VMaximum current 20A maximum power 1000W Tested 53V power supply when working properly Because of its moderate power can be used for small parts DIY players do hardening annealing and other heat treatment Also can be used with a graphite crucible melting gold silver copper aluminum and other metals uniform heating fast very convenient Inside diameter of the coil 40mmHeight of the coil 50mm24V input with no load current of 3A48V input with no load current of 6AThe higher the voltage the greater the heating current when the same thing the effect is better But at the same time heat is also large so to eradicate the actual situation to select the input voltage the general use of the words 24V or 36V power supply is enough It suits 12 36V power supply not included The coil accept 40mm crucible Note 1 The kit contains a full set of driving circuit elements and brass2 Buyers need to bring their own power and cooling unit 3 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 add a fan to blow down from above to the resonance capacitors and other components cool 4 The use of switching power supply Please note that due to high power are generall