Power switching apparatus

A power switching apparatus comprising:

• a detection circuit comprising:
• a voltage adjusting unit;
• a delay unit;
• a first switch unit electrically connected to the voltage adjusting unit and the delay unit, the voltage adjusting unit adjusting a starting voltage of the first switch unit, when a main power supplies power normally or the main power stops supplying power but the delay unit continues working in a setting time, the first switch unit being turned on, when the main power stops supplying power and the delay unit stops working, the first switch unit being turned off;
• and
• an isolation unit electrically connected to the first switch unit, when the first switch unit is turned on, the isolation unit sending out a first signal, when the first switch unit is turned off, the isolation unit does not send out the first signal;
• a control circuit receiving the first signal;
• and
• an auxiliary power circuit comprising an auxiliary power input side and an output side, the auxiliary power circuit electrically connected to the control circuit,
• wherein when the control circuit receives the first signal, the control circuit renders that the auxiliary power input side does not conduct to the output side;
• when the control circuit does not receive the first signal, the control circuit renders that the auxiliary power input side conducts to the output side.