| 摘要 |
A frequency dependent controller that utilizes a loosely coupled transformer having a magnetic shunt with an air gap, which controller is adjusted to change the operating characteristics of the transformer by varying its operating frequency in accordance with the operating requirements of a load to be supplied with power. If the transformer is operated at a single frequency, the maximum current that can be delivered is a function of the magnetic shunt, air gap and that signal frequency. If the transformer is operated over a frequency range by the controller, the maximum current and other operating characteristics of the transformer are a function of both the magnetic shunt and its then current operating frequency. Frequency control of a loosely coupled transformer permits precision electronic regulation of the transformer's operating characteristics and is suitable for control of a variety of devices, such as gas discharge lamps, DC to DC converters, AC to DC power and high voltage supplies, motor control and variable heaters. |
