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AC Frequency
- Thread starter megbers
- Start date
Here is a home built unit.
I built something like this for my university thesis, except mine was a current-source inverter fed on a diet of 415V 3 phase at 20kW and an ample supply of cooling water.
How much power are you trying to transfer into the load? Audio amps for the semi-pro market are readily available up to about 1kW into a small load. A coupling transformer might be needed to impedance match the load coil to the amplifier. They're fun to build, especially trying to get hold of small quantities of large section ferrites.
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Sometimes I wake up Grumpy.
Other times I just let her sleep!
How much power are you trying to transfer into the load? Audio amps for the semi-pro market are readily available up to about 1kW into a small load. A coupling transformer might be needed to impedance match the load coil to the amplifier. They're fun to build, especially trying to get hold of small quantities of large section ferrites.
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Sometimes I wake up Grumpy.
Other times I just let her sleep!
I've just watched the youtube clip. That is disturbingly similar to the thing I built, but a lot smaller. The highlight of my project was getting over 7000 people evacuated from the engineering buildings one snowy November day - my birthday funnily enough - after smoke started pouring out of a cable duct. There was a big inquiry about why the breakers had not tripped but I wasn't privy to any of that.
- Thread starter
- #8
If you are heating a conductor, (steel), can't you just run a current thru it?
Keith Cress
Flamin Systems, Inc.-
Keith Cress
Flamin Systems, Inc.-
Ok, so the question is are you trying to achieve surface heating only or bulk heating? 10kHz suggests surface only in which case you need a powerful source to get energy into the surface layers faster than conduction can get it away from the surface into the core of the metal. Is this for a surface hardening application where you need a hard surface over a softer core? Also do you mean 400C or 400F? Big difference in power! I assume 400C for a metal hardening application.
BTW, have you considered adapting a bearing heater?
'Smoked,
My project was notorious enough before this incident: setting the university on fire elevated me to demigod status.
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Sometimes I wake up Grumpy.
Other times I just let her sleep!
BTW, have you considered adapting a bearing heater?
'Smoked,
My project was notorious enough before this incident: setting the university on fire elevated me to demigod status.
----------------------------------
Sometimes I wake up Grumpy.
Other times I just let her sleep!
Skogsgurra
Electrical
You are not alone Scotty!
There is a commissioning engineer at ABB. He is named Smokey after he burned down a paper mill in Israel. He is also quite famous.
Gunnar Englund
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
There is a commissioning engineer at ABB. He is named Smokey after he burned down a paper mill in Israel. He is also quite famous.
Gunnar Englund
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
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