The Advantages of Purified Voltage Stabilized Power Supplies:
The purification and voltage stabilization power supply, operating in saturation during resonance, does not allow external interference to alter the saturation current, effectively isolating the interference.
Since the increased input voltage is all applied to the capacitor, a wider range of input voltage conversion is permitted.
C. Due to the absence of electronic components in the circuit, reliability is significantly higher.
Drawbacks of the Purified Communication Stabilized Power Supply:
Due to the saturated working state, it consumes a significant amount of power and operates with low efficiency.
B. Due to resonance at the mains frequency, it is highly sensitive to frequency changes. Any variation in the mains frequency can lead to oscillation stoppage. Once stopped, more than three times the reactive power stored in the inductor is released instantaneously, forming high-voltage pulses of thousands of volts that are transmitted outward, destroying nearby equipment. The repeated fires in the UPS of a domestic telecommunications department were all caused by this issue.
C. Due to resonance at the line frequency, if there's a rectifying load downstream, the harmonics generated by the rectification can also cause the circuit to stop resonating. According to tests by relevant scientific research agencies, at this point, the capacity of the voltage regulator should be several times greater than the downstream load (a typical experiment indicates a factor of 10). The multiple UPS fires in the telecommunication department were due to the insufficient capacity of the voltage regulators: for instance, a 15KVA voltage regulator powering a 16KVA UPS, and a 30KVA voltage regulator powering a 40KVA UPS, with nearly all the associated equipment affected in dozens of setups.
Due to the internal storage of a large amount of reactive power during circuit operations, the input power factor is low, resulting in the inefficient utilization of the input utility power and the wastage of valuable electrical energy resources.
