File:Pc-psu inner.JPG

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English: Inside ATX PC power supply
A - AC Input ( 230 V AC )
B - Net Filter and chassis ground wire (yellow/green), to chassis screw
C - AC filtered input
D - Fuse
E - NTC to limit the startup current
F - Filter bypassed with two wires and moved to B to provide space for the PFC choke
G - Rectifier
H - PFC-choke connector, black marks SW for 115 V switch (not installed in this sample)
J - Primary smoothing capacitors 2x 200 V
K - Heat sink switching transistors
L - Main transformer
M - Optocouppler
N - Standby transformer
O - Common wire bunch - ground - transformer coils secondary side
P - Heat sink secondary rectifier
R - 5 V-SB smoothing capacitors
S - 5 V and 12 V choke
T - 3.3 V choke
U - Smoothing capactors for 3.3 V, 5 V, 12 V - two each (these have the highest ripple current load)
W - Output harness
Left to K: Timing capacitors, a failure will blow Q1/Q2 and trigger the fuse
Between L and N: feedback-oscillator-couppler
Between N and O: 5 V to 3.3V shifting choke
White Plug next to T: internal fan motor
Between L and W: (not connected L4 and C23) not used -5 V
Deutsch: Im Innern eines PC-Netzteils
A - Wechselspannungseingang ( 230 V AC )
B - Netzspannungsfilter und Gehäuseerdungsleitung (Grün-Gelb), zur Gehäuseschraube
C - Gefilterte Netzspannung
D - Sicherung
E - NTC - Heißleiter zu Einschaltstrombegrenzung
F - Überbrückter Netzfilter, wurde nach B verlegt, um der PFC-Drossel Platz zu bieten
G - Gleichrichter
H - Anschluss für PFC-Drossel. SW sind die schwarz markierten Anschlüsse für den 115 V Eingangsspannungsschalter (In diesem Exemplar nicht eingebaut)
J - Primäre Glättungskondensatoren 2x 200 V
K - Kühlkörper für Schalttransistoren
L - Haupttransformator
M - Optokoppler
N - Standby Transformator
O - Gebündelte Enden der Sekundärwicklungen - Masse (0 V)
P - Kühlkörper für Sekundärgleichrichter
R - 5 V-SB Glättungskondensatoren
S - 5 V und 12 V Speicherdrossel
T - 3.3 V Speicherdrossel
U - Glättungskondensatoren für 3.3 V, 5 V, 12 V - jeweils zwei (diese unterliegen der intensivsten Belastung durch Mischstrom)
W - Ausgangskabelbaum
Links von K: Zeitgliedkondensatoren; ein Ausfall zerstört Q1/Q2 und löst die Sicherung aus
Zwischen L und N: Rückkopplungsübertrager
Zwischen N und O: 5 V auf 3.3V Phasenschieberdrossel
Weiser Anschluss neben T: Interner Lüftermotor
Zwischen L und W: (nicht bestückt L4 und C23) nicht geschaltete -5 V
Date
Source Own work
Author Hans Haase

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current14:36, 11 June 2012Thumbnail for version as of 14:36, 11 June 20122,272 × 1,704 (1,012 KB)Hans Haase (talk | contribs)

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