Views: 3 Author: Site Editor Publish Time: 2018-03-30 Origin: Site
Capacitor voltage reduction is actually using capacitive reactance to limit current. The capacitor actually acts as a limiting current and dynamically distributing the voltage at both ends of the load. .
The following points should be paid attention to when using capacitor to reduce voltage:
1.Choose the appropriate capacitor according to the current size of the load and the operating frequency of the alternating current, not according to the voltage and power of the load. .
2.Current-limiting capacitors must be non-polar capacitors, absolutely not electrolytic capacitors. And the capacitor withstand voltages should be above 400V. The ideal capacitor is the iron shell oil immersion capacitor .
3.Capacitor step-down cannot be used in high-power conditions because it is unsafe. .
4. Capacitive voltage reduction is not suitable for dynamic load condition. .
5.Similarly, capacitive step-down is not suitable for capacitive and inductive loads. .
6.When the DC operation is needed, the half-wave rectifier is adopted as far as possible. Bridge rectification is not recommended, But it is better to meet the condition of the constant load bar.