| 摘要 |
<p>The supply unit has a clock oscillator (13) formed as a feedback Schmitt trigger and guiding a drain-source-voltage of a power transistor to an input of comparators (26) i.e. Schmitt trigger (14.3), through voltage dividers (RD, Rm). An output of the comparator is guided to a feedback point (A) of the oscillator through a coupling network (28) i.e. parallel resistor-capacitor member. An output signal of a control amplifier (18) is added to a signal proportional to a switching current, and a summing signal corresponding to the voltage value is assigned to the feedback point of the oscillator.</p> |
