Uvod u sastav DC stabiliziran napajanje napajanje
Uvod u DC Voltaže Regulatori
To je an elektronički uređaj to can osiguraj stabilno DC napajanje opskrba za the opterećenje. DC regulirano napajanje napajanje opskrba je uglavnom AC napajanje opskrba, when the AC power supply voltage or load resistance changes, the DC output vola vola vola stabilno. DC regulirano napajanje napajanje s elektroničko oprema to visoko preciznost, visoko stabilnost i high pouzdanost of the direction of development, the power supply of electronic oprema PUT FORWARD High Requirements.
Due to the karakteristike of electronic technology, electronic equipment on the power supply circuit is required to be able to provide continuous and stable, to meet the requirements of the the load electric energy, and obično require the provision of Stable DC power. The power supply that provides this stable DC power is the DC regulated power supply. DC regulated power supply the power supply technology ocies a very important pozicija. In addition, many electronics enthusiasts at the beginning of the first encounter is to solve the problem of power supply, otherwise the circuit can not work, electronic production can not be caried out, learning can not begin.
DC regulirano snaga opskrba klasifikacija
1. Linearno
Linear stabilizirad power supply has a common feature is that its power device regulator tube work in the linear region, relying on the voltage drop between the regulator to stabilize the out. Because the adjustment tube static loss is large, need to install a large heat sink to give it heat disipation. And the transformer works on the frequency (50Hz), so the the weight is veće.
The advantages of this type of power supply is high stability, small ripple, high reliability, easy to make multiple, continu adjustable out finished product. Disadvantages are large, gloky, relativno low efficiency. Ovo tip of stabilizirana napaja opskrba i tamo are mnogo vrsta od izlaz svojstva can be podijeljeno into napon stabiliziran napajanje i struja stabilizirana napajanje i energija energija napajanje i voltage stabiliziran i struja stabilizirana in one of the stabilizirad voltabilna vola energija energija (duplo stabilizirana) napajanje opskrba. From the izlaz vrijednost can be podijeljeno into fiksna točka izlaz napajanje opskrba, band prekidač podesivo i potenciometar kontinuirano podesivo type. From the out indication can be divided into pointer indication type and digital display type and so on.
2. Prebacivanje vrsta
With the linear regulated power supply is a different class of regulated power is switching DC regulated power supply, its circuit type is mainly single-ended flyback, single-ended flyback, single-ended forward, half-bridge, push-pull and full-bridge. The fundamental difference between it and the linear power supply is is that transformer does not work at the frequency but works in tens of kilohertz to several megaherca. Function tube is not work in the saturation and cut-off region that is switching state; switching power supply is that named.
The prednosti of switching power supply is small size, light weight, stable and reliable; disadvantages relative to linear power supply ripple is large (general Less than or equal to 1% VO (P-P), good can be done more than ten mV (P-P) or less). Its power can be from a few watts -a a few few kilowatts have products.
