| 摘要 |
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 |
