The difference between the series DC power supply and the parallel DC power supply
There are many ways to classify the regulated power supply, and the DC power supply and the AC power supply are connected according to the type of the output power supply. According to the connection mode of the voltage regulator circuit and the load, the series power supply and the parallel power supply are connected. Working conditions are divided into a linear power supply and switching power supply; according to the type of circuit is divided into a simple power supply and feedback power supply, and so on. DC power supply specifications can be divided into two categories: one is the characteristics of indicators, reflecting the inherent characteristics of DC power supply, such as input voltage, output voltage, output current, output voltage adjustment range; the other is the quality indicators , Reflecting the advantages and disadvantages of DC power supply, including stability, equivalent resistance (output resistance), ripple voltage and temperature coefficient.
Ordinary series power supply are installed power transformer, with the output voltage stability, ripple, etc., but the voltage range is small, low efficiency.
Parallel power supply output voltage is particularly stable, but the load capacity is poor, generally only in the instrument to do the benchmark with.
The main difference: parallel DC power supply / low efficiency, especially when light load, the power is almost all consumed in the current limiting resistor and adjust the tube; * Output voltage adjustment range is very small; stability is not easy to do very high.
The series power supply is just to avoid these shortcomings, so now widely used are generally series power supply.
