How RF generators work |
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| We get our electricity from a socket but this electricity is just a "raw material" for us like concrete for an architect or sheet metal for an auto body maker. The raw material "electricity" undergoes a special trans-formation with RF generators a defined form of frequency and power always adapted to the customer’s process. Basically, a RF generator consists of an oscillator, a modulator, various amplifiers and a control unit. Like a tuning fork, the quartz oscillator acts as the first link in the chain, generating uniform oscillations, in our case, a constant 13.56 megahertz. However, the signal, or the amplitude, is still much too weak. So, in the next step, the signal travels through several amplifiers, gaining intensity. At the output of the generator the control unit continuously measures the power and compares it with the required power, in our example 50 kilowatts. Based on the result, the control unit constantly regulates the modulator, which is connected in front of the amplifiers. The modulator has the same function as the volume control on a stereo system. The control unit determines how much power is made available at the end of the amplifier chain. Inside a generator, a millionth of a watt becomes 50,000 watts with a constant frequency of 13.56 megahertz.
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| © 2008 TRUMPF, 20.10.2008 | |