How to activate the old safety capacitor(I)

Do you know how to dispose of safety capacitors? How to activate the old safety capacitor? Here are a few ways to do it:

1. After the safety capacitor is fused, start adding half voltage. Take the 400V safety capacitor as an example. The AC current voltage can be adjusted to 130. At this time, the DC voltage on both sides of the safety capacitor is 130Vx1.4=180V. 24 hours.

2. Use a multimeter resistance file to measure the safety capacitance that is to be activated. When the forward resistance is 0 or less, it indicates that the safety capacitor has been broken down. In addition, safety capacitors other than those can be activated.

3, there are disconnected AC power, with another 5W300Ω resistor connected on both sides of the safety capacitor discharge, pay attention to be sure to finish.