Push-pull oscillator with power MOSFET

摘要

The push-pull oscillator contains a parallel resonant circuit with an inductance (L2) with centre tap and a feed choke (L1). The current in the main branches is controlled by one power MOSFET (1, 2) each. The power MOSFETs are cross-coupled with one another via limiters (3, 4) which, on the one hand, have a low impedance below the limit value. On the other hand, the control voltages (UG1, UG2) for the power MOSFETs (1, 2) are limited to a value which is not hazardous the gate-source capacitance of the power MOSFETs.