Apžvalga filtras grandinė DC stabilizuotas maitinimas tiekimas
Sudėtis ir darbo principas a reguliuojamas maitinimas tiekimas
(1) DC reguliuojamas galia tiekimas paprastai susideda iš keturios dalys: transformatorius, lygintuvas grandinė, filtras grandinė, ir reguliuojama grandinė.
(2) Rectification utilizes the unidirectional conductivity of a diode to convert alternating current into pulsating direct current. Pagal to the output waveform, rectification can be divided into half wave and full wave rectification. Half wave rectification only need one diode, but the output is only half of the sine wave, result in low conversion efficiency. The output of bridge full wave rectification is two and a half cycle waveforms, and the output voltage has doubled, but the number of rectifier diodes has increased to four, making the circuit more complex.
(3) The filtering circuit can filter out the AC component in the rectifier output and get a reliatively smooth DC current. The average output voltage increases after adding capacitor filtering. Capacitive filtering is suitable for applications with high load resistance and low load current. When talpive filtering cannot meet the requirements, ***filtering can be added to form a complex filtering.
(4) Įtampa stabilizuojanti grandinė gali stabilizuoti the output voltage by automatically adjusting the voltage stabilizing device during voltage fluctuations or load changes in the power grid. The transistor series voltage stabilizing circuit is composed of sampling, reference voltage, comparative amplification, and adjustment parts. It has good voltage stabilizuojantis charakteristikos and is šiuo metu plačiai naudojamas as a grandinė. Integruota įtampa stabilizavimas grandinės are vis dažniau plačiai naudojama dėl jų privalumai tokie kaip mažas dydis, lengvas svoris, patogus įrengimas ir derinimas.
(5) Integruotas įtampa reguliatorius tik turi trys išėjimas terminalai: įėjimas terminalas, išėjimas terminalas, ir bendras terminalas, kuris is patogu naudoti ir turi geras įtampa stabilumas.
