| 摘要 |
<p>A radio frequency generator comprises a set of switching transistors (1 to 4) which drive a radio frequency filter (5,6) of which an inductor (6) is tightly coupled to a coil (15) which feeds a bridge rectifier (17). The rectifier (17) is biassed by the source of direct current and begins its rectifying action when the load current becomes excessive. The load current becomes excessive as a result for instance of mismatch of the antenna (7,8,9). The arrangement provides protection against high load currents and thereby protects the switching elements (1 to 4) from damage.</p> |
