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Hey everybody, I was sitting at my desk, and decided I would rebuild my old mini ZVS charger. As I was building it I decided to turn directions, and see if I could make a mini induction heater.
Here is what I got:
The problem was a solder joint for the work coil had melted. Messing around with it though I blew the FETs, so I'll have to get some better ones and try again.
Is there a way to guess how much power is being transferred to the workpiece? I don't have an amp meter right now so I can't measure current draw or anything like that.
Registered Member #2310
Joined: Wed Aug 19 2009, 08:04PM
Location: Santa Catarina - Brazil
Posts: 169
I don't think so... The only way I imagine, is getting a Multimeter, and measuring the voltage and current that the circuit is drawing, but remember, always when you turn the circuit on, that it enters in ressonance, the voltage sags considerably, so always measure the voltage with load on the workcoil.
Than you'll still have to calculate the efficiency of the heater, to know how much power is being tranfered to the workpiece.
Registered Member #3900
Joined: Thu May 19 2011, 08:28PM
Location:
Posts: 600
currentkills91 wrote ...
Is there a way to guess how much power is being transferred to the workpiece? I don't have an amp meter right now so I can't measure current draw or anything like that.
Q = (m)(c)(Tf-Ti)
where: m=mass c=specific heat of metal Tf-Ti= change in temp in C
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Mini ZVS Induction Heater
