Patent ID: 11955893
Assignee: SHENZHEN HUNTKEY ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. The switching power supply of claim 7, wherein
the switching power supply further comprises a third voltage stabilizing diode and a fourth voltage stabilizing diode;
the second voltage is connected to a power supply terminal of the PWM control unit through the third voltage stabilizing diode; the first auxiliary voltage is connected to the power supply terminal of the PWM control unit through the fourth voltage stabilizing diode; a cathode of the third voltage stabilizing diode and a cathode of the fourth voltage stabilizing diode are connected to the power supply terminal of the PWM control unit;
a stabilized voltage value of the first voltage stabilizing diode is determined by the power supply voltage range of the power supply terminal of the PWM control unit.