FIELD: electric engineering.
SUBSTANCE: device has force transistor 1, operating in key mode, transformer 3, primary winding 6 of transformer 3 with number of coils W1, secondary winding 2 of transformer 3 with lesser number of coils W2, secondary winding 4 of transformer 3 with greater number of coils W3, control circuit transistor 5, resistor 7, capacitor 8.
EFFECT: simplified construction, higher reliability, lesser dimensions and mass.
1 dwg
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