Dc stabilized power supply can be divided by the habit for chemical power source, linear stabilized power supply and switch stabilized power supply, they have all sorts of different kinds respectively again:

　 Chemical power source

Batteries of ion of hydrogen of cadmium of acerbity accumulator of the dry cell that we use usually, lead, nickel, nickel, lithium all belongs to this a kind, each have its actor drawback. As the development of science and technology, produced intelligence to change battery again; Charging batteries data side, the member that the United States is developed discovers a kind of iodide of manganese, use it to be able to make time of a petty gain, cabinet, discharge, property still holds after charging for many times good environmental protection charge batteries.
Linear stabilized power supply

The power parts of an apparatus that linear stabilized power supply has a common characteristic is it adjusts a canal to work online sex area, rely on to adjust the voltage drop between the canal to stabilize output. Because adjust Guan Jing state loss is big, need installs a very big radiator to come loose to it hot. And because transformer works in labour frequency (on 50Hz) , weight is so greater.

Advantage of this kinds of power source is stability tall, ripple is small, reliability is high, multichannel of easy strike out, export successive and adjustable finished product. Defect is bulk big, more cumbersome, efficiency is relatively inferior. This kind of stabilized power supply has a lot of kinds again, from output property can be divided reach collect stabilized voltage, steady flow for regulated power supply and constant current power supply the stabilized voltage steady flow at a suit (double firm) power source. Can divide switch of power source of the output that decide a dot, wave band to adjust type and potentiometer from the point of output value successive and adjustable type a few kinds. Can divide pressing with a finger from output directive directive show pattern with the number model etc.

　 Origin of switch dc regulated power supply: HTtp://www.tede.cn

A kind of when differ with linear regulated power supply steady power supply is switch dc regulated power supply, its circuit type basically has Chan Duan to stimulate type instead, sheet stimulates type of type, half bridge-type, push-pull and complete bridge-type rightly. The essential distinction of it and linear power source is not working to work to arrive in a few hertz however in labour frequency at its transformer a few hertz. Functional canal is not to work to be reached in saturation end area namely switch condition; Switch power source gets a name because of this.

The advantage of switch power source is bulk small, weight is light, stable and reliable; Defect photograph to linear power source ripple is bigger (general ≤1%VO(P-P) , good can accomplish ten MV(P-P) or smaller) . Its power but from a few tile - thousands of tile all has a product. Price is 3 yuan - ten yuan / made of baked clay, classification of general habit introduces power source of a few kinds of switch below:
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