High frequency induction heating is used in pipe welding, pipe and steel shape heating and bending, silicon crystal purification, soldering, hot pressing, adhesive heating, and other applications. The high-frequency oscillators used in these applications require highly-precise tracking and stability, and oscillator output must be adjustable according to the pipe feed speed to achieve a consistent level of power output for each unit of pipe length. DKK is recognized throughout the industry for providing highly-stable high-frequency power supplies that have little power supply ripple and which are suitable for a variety of applications in this area.