Keyword: Sine communicates manostat; Buck: Odd polarity moves to be controlled
0 foreword
Because the voltage of electrified wire netting of our country communication is fluctuant bigger, especially outlying a rural area, communication regulated power supply already made the power supply device with a lot of electron indispensable equipment. According to working principle, communication regulated power supply can be divided adjust for parameter (syntonic) model, from Ou (change than) adjust model, high-power compensation with switch model etc 4 sort. The Buck of article introduction sine communicates manostat, compare with afore-mentioned traditional 4 sort photograph, have load to get used to ability performance of strong, stabilized voltage is good reach output weaveform mass advanced advantage.
The typical circuit of 1 communication manostat
Parameter is adjusted (syntonic) model communication regulated power supply, its job principle is shown like graph L(a) place, it is to use circuit nonlinear yuan of parts of an apparatus is right the voltage in circuit and wither of electric inpour travel are whole, realize the stability that outputs voltage thereby. Regulated power supply of this kinds of communication has circuit tall, interference rejection sex mixes simple, lasting accuracy by force input voltage range is wide wait for an advantage, but existence outputs undee THD tall, circuit yuan parts of an apparatus is very sensitive to working frequency, power input factor is very low, output capacity is done hard big, wait for blemish without electric segregation.
From Ou (change than) adjust model communication manostat, its job principle is shown like graph 1(b) place, be with from Ou transformation (pressure regulating) implement realize stabilized voltage function for the foundation. Manostat of this kinds of communication has circuit simple, input voltage range is wide wait for an advantage, but THD of existence output weaveform is tall, stabilized voltage precision is inferior, bulk weight is great wait for blemish.
Regulated power supply of high-power compensation communication, its job principle is shown like graph 1(c) place, it is a linear transformer in the main circuit that series connection is carried in the input and outputs end, control this transformer the size of primary voltage and polarity, use its are sub voltage undertakes compensating to inputting voltage, realize the stability that outputs voltage thereby. Manostat of this kinds of communication has output the size is large, it is good to get used to ability to electrified wire netting, efficiency is advanced advantage, but THD of existence output weaveform is tall, output and input do not have electric segregation, the blemish such as dynamic function difference.
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