Advantages of the step-down capacitor of the chip capacitor

The step-down circuit of the chip capacitor has the following advantages. The circuit is simple, the components are small, the noise is small, and the magnetic interference can be prevented. However, this circuit also has the following disadvantages. A power supply with low power factor, large reactive power, and unsuitable for a slightly larger load current is not suitable for power supplies with wide input voltage and large load current variation.

When the chip capacitor passes through the AC telephone, there is a phase difference between the current and the voltage, so the oscillation is easily generated in the gain circuit.