Figure :3-9. Power Supply Block Diagram - HP 330 Service Information Manual
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Also See for 330:
- Service handbook (94 pages) ,
- Installation reference (93 pages) ,
- Quick start manual (2 pages)
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~
~
~
::l
n
M-
O·
::l
e:.
u
(t)
00
n
..,
>8'
M-
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::l
~
dQo
=
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~
~
I
~
~
~
"1
r:n
=
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't::'
c<
t:C
0"
(")
~
~
So
()Q
"1
~
S
Line Filter
(low freq.)
f
Power Switch
1
Fuse
I
Comn:ercial
I
Line Filter
Line
~
(high freq.)
. .
---.
V Sel
bridge
rectifier
& energYI--
storage
t
...
.
Transformer
~
~
~
rl
DD~{ 2~eo.
.-rectifier
r
~
1
rectifier
~
-12V
post reg.
....
--..
...
--..
~
+5V over
~I
current
sensor
I----~~...
rectifier
IT.
switching
1oII~1-------------l
control
circuitry
oJ
~
+
+5V feedback
~
loop circuitry
E
+5V
overvoltage
protection
+
1 2V
circuitry
-1 2V
PURESET
~- ~es~f~
+5V
-
I
circuitry
k---
+
1 2V
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