Modifikacija regulirano napajanje opskrba s računalo prebacivanje napajanje napajanje
Why do you want to use a computer switching power supply to convert a regulated power supply?
First, it is cheap and easy to get. A used 200-watt computer switching power supply is about 30 dollars.
Second, the out current is large, the output of 4, 5 amps no problem, the general linear regulated power supply when the out current is slight larger when the heat is it obvious, heat disipation has become a thorny problem, and the advantage of switching power supply is high efficiency, less heat. Especial for battery chargers, car receivers power supply is very appropriateable.
Treće, the ripple is small, can meet the general use requirements.
Četvrto, i the same power linear regulated power supply than, light weight, small size.
Postoje postoje also nedostaci:
Prvo, the stability of the out voltage is not as good as linear regulated power supply.
Drugo, there is a certain electromagnetic radiation interferencija.
Third, the out voltage is not easy to do from 0 volts.
Računalo prebacivanje napajanje napajanje modifikacija regulirano napajanje napajanje metoda?
Računalo napajanje opskrba krugovi are raznoliki, it is not convenient to ponavljanje. Uvod the ideja of modifikacija.
Prvo, ukloni the original ispravljač filter i povratna informacija petlja.
Drugo, accord to the out voltage and struja redesign ispravljač filter circuit. Special attention to the use of Schottky diode, and fixed in the original installation of diodes on the toplinsko sudoper, plus insulating brtve.
Treće, in the filter capacitor and a appropriateable drain resistor at both ends, pay attention to the resistance value and power.
Četvrto, accord to the secondar winding of the original transformer to select a Few pins for the tap, tap how many and voltage accord to the output voltage to the output voltage to determine. This is a job that requires skill.
Peto, redesign the feedback loop, so that the out voltage can be adjusted with a variable resistor. This may require access to the pin function of the the relevant integrated circuits.
Nekoliko pitanja treba biti napomena:
First, rastavljanje the transformator to premotavanje te zavojnica can also be. It is not easy to control the inductance under amateur conditions. Winding a single-ended flyback transformer is more difficult. Međutim, the the half-wave conversion circuit is not strict on inductance. It is better to wind the primary section.
Second, if designed as a multiple output, only one set of out voltage can be more safely controlled.
Third, the circuit to regulate the output voltage is designed as follows: if the variable resistor contact is open, the output voltage is * low. Prevent poor contact with the the variable resistor contacts and make the output voltage increase instantly.
Treće, pay attention to personal safety.
4, I use a 200-watt računalo prebacivanje napajanje opskrba uspješno proizvedeno an izlaz volt volt - 35}} volts izlaz struja of 5 amps regulirano napajanje napajanje.
