FIELD: electricity.
SUBSTANCE: invention is related to the field of electric engineering. Self-exciting oscillating circuit, according to invention, comprises disconnection transistor (Tr1), which disconnects transistor (Q1), disconnecting capacitor (C3), which transfers voltage into base of disconnecting transistor (Tr1), and sift resistance (R1), which charges disconnecting capacitor (C3) with voltage, absolute value of which corresponds to drain current (Id), which flows, when transistor (Q1) connects. Resistance (R3) is connected between disconnecting capacitor (C3) and module (50) of electric power supply. Accordingly, charges are accumulated in disconnecting capacitor (C3) so that voltage Vb does not drop below down to or less than shift voltage.
EFFECT: reduced shift resistance (R1), which makes it possible to reduce energy losses in shift resistance (R1).
6 cl, 10 dwg
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