Brief Discussion on Switching and Linear Regulated Power Supplies
When there is a momentary fluctuation in the voltage or load of the power grid, the regulated power supply will compensate for the voltage amplitude with a response speed of 10-30ms, stabilizing it within ± 2%.
Main functions
stable voltage
When there is an instantaneous fluctuation in the voltage or load of the power grid, the regulated power supply will compensate for the voltage amplitude with a response speed of 10-30ms, stabilizing it at ± 2%
Inside.
Multi functional comprehensive protection
In addition to the basic function of stabilizing voltage, voltage regulators should also have the most basic protection functions of overvoltage protection (exceeding+10% of the output voltage), undervoltage protection (below -10% of the output voltage), phase loss protection, and short-circuit overload protection.
Sharp pulse suppression
The power grid sometimes experiences sharp pulses with high amplitude and narrow pulse width, which can penetrate electronic components with lower voltage resistance. The anti surge components of the regulated power supply can effectively suppress such sharp pulses.
Isolate conductive EMI electromagnetic interference (optional):
Numerical control equipment often adopts AC/DC rectification+PFC high-frequency power factor correction, which has certain interference and strict requirements for interference sources. The filtering component of the regulated power supply can effectively isolate the interference of the power grid on equipment and also effectively isolate the interference of equipment on the power grid.
lightning protection
The required lightning protection capability.
working principle
After being stepped down, rectified, and filtered by a transformer, the AC power supply becomes a stable DC power. The rest of the diagram is for voltage regulation to achieve voltage stabilization
The control part used. After connecting the power supply to the load, the output voltage is obtained through a sampling circuit and compared with the reference voltage. If the output voltage is less than the reference voltage, the error value is amplified by an amplification circuit and sent to the input terminal of the regulator. The regulator adjusts the output voltage until it is equal to the reference value; If the output voltage is greater than the reference voltage, the output is reduced through a regulator.
