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

Claim 9:
10. The switching power supply of claim 6, wherein
the second DC power supply circuit comprises a voltage stabilizing chip outputting the second voltage based on the second auxiliary voltage, wherein the second voltage is a set voltage value or a voltage value related to the second auxiliary voltage;
the first DC power supply circuit comprises a second voltage stabilizing diode;
the first auxiliary voltage is connected to the base of the PNP triode through the second voltage stabilizing diode, and the cathode of the second voltage stabilizing diode is connected to the base of the PNP triode, wherein the voltage at the base of the PNP triode is the first voltage.