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  • 15/08/2017

    It is an impressive induction heater working at 85 kHz frequency. I have added a little improvements : cooper contact for coil, a fan cooler and refractory sponge-brick as coil / crucible support. I have tested with a switching power supply with DC output of 24V /20A using a graphite crucible (33mm diameter and 30mm height); the current was aprox. 18A and the crucible has reach 900C in 3-4 minutes; first i have start the power supply then i have connected the induction heater. i recommend this induction heater.

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  • 26/03/2016

    Coil ID 1.700", OD ~2.160. Board (overall, including heat sinks) 4.400" x 3.950" x 1.520". All dims are approximate and rounded up to the next number that made any sense. Input voltage is marked for polarity (- terminal only) but neither voltage nor amperage are labeled. Again, like with the smaller unit, if you were hoping to receive some sort of documentation, you are out of luck. The copper tubing is not insulated so, despite the generous size of the coil, the electrical path will be quite short with the whole coil acting as if there is only a 1/8th turn unless you make the effort to isolate the tubing yourself. I've made no attempt to power this up yet, so all I can pass along are the physical attributes.

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