induction heater

Discussion in 'The Projects Forum' started by shashankmani, Feb 23, 2014.

  1. shashankmani

    Thread Starter New Member

    Feb 23, 2014
    1
    0
    i was building a induction heater so i watched lots of videos. in all of them they were converting ac to dc through a rectifier circuit,then converting the dc to a high frequency ac and feed it to a coil.
    can i increase the freq of ac without converting it to dc. if yes how? will it work??
     
  2. tcmtech

    Well-Known Member

    Nov 4, 2013
    2,044
    1,678
    No you can't. Or not easily at least.
     
  3. Plasmahunt3r

    New Member

    Feb 6, 2014
    28
    2
    Look at the Class E Magnetic Induction Heater thread. It is using a crystal to set a frequency, but could be a RC setup for variable frequency.

    Frequency control is vital in many things, like Induction heating and electric cars.

    For instance, cars that use AC Motors (Tesla Motors). Speed is controlled by increasing the frequency. If you had a steady 60 HZ frequency, you would have a steady rpm. By converting to DC, then using a similar circuit to Magnetic Induction Heaters to create AC, RPM is increased by increasing the frequency. A throttle is just a potentiometer on the frequency control portion of the circuit.
     
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