content/LPD422FM.rst

changeset 115
6b6e13653348
parent 49
26e34edd2984
child 128
aba381b2bac9
--- a/content/LPD422FM.rst	Wed Oct 16 21:52:38 2019 +0200
+++ b/content/LPD422FM.rst	Wed Oct 16 21:53:47 2019 +0200
@@ -9,7 +9,7 @@
 This post is a quick presentation and teardown of a small bench power
 supply I bought on ebay a few weeks ago for something like 40€.
 
-.. image:: {filename}/images/lambda/lpd422fm_overall.jpg
+.. image:: {static}/images/lambda/lpd422fm_overall.jpg
    :alt: The Lambda LPD 422 FM dual regulated power supply.
 
 It's an old unit, not sure it's exact age, but the components inside
@@ -33,28 +33,28 @@
 It seems to be "remote programmable", and have remote sensor entries
 on the back of the unit.
 
-.. image:: {filename}/images/lambda/lpd422fm_back.jpg
+.. image:: {static}/images/lambda/lpd422fm_back.jpg
    :alt: Rear view of the LPD 422 FM dual regulated power supply.
 
 Inside the enclosure:
 
-.. image:: {filename}/images/lambda/lpd422fm_top.jpg
+.. image:: {static}/images/lambda/lpd422fm_top.jpg
    :alt: Top view of the LPD 422 FM dual regulated power supply.
 
 Each of the 2 power supplies have a regulator board on each side of
 the enclosure. The power transformer is sitting at the center of the
 enclosure and shows a nice "Component Location Diagram":
 
-.. image:: {filename}/images/lambda/lpd422fm_xformer.jpg
+.. image:: {static}/images/lambda/lpd422fm_xformer.jpg
    :alt: The power transformer of the LPD 422 FM dual regulated power supply.
 
 A regulator board looks like:
 
-.. image:: {filename}/images/lambda/lpd422fm_board2.jpg
+.. image:: {static}/images/lambda/lpd422fm_board2.jpg
    :alt: Top view of one regulator of the LPD 422 FM dual regulated
          power supply.
 
-.. image:: {filename}/images/lambda/lpd422fm_board1.jpg
+.. image:: {static}/images/lambda/lpd422fm_board1.jpg
    :alt: Bottom view of one regulator of the LPD 422 FM dual regulated
          power supply.
 	 
@@ -70,10 +70,10 @@
 ========================
 
 - `Lambda LP, LPD & LPT series catalog
-  <{filename}/pdfs/lambda/LAMBDA_LPD_LPD_LPT_series.pdf>`_
+  <{static}/pdfs/lambda/LAMBDA_LPD_LPD_LPT_series.pdf>`_
 
 - `Instruction and Service Manual for Lambda LPD suffix A Series Power
-  Supplies <{filename}/pdfs/lambda/LambdaLPD.pdf>`_: this is not
+  Supplies <{static}/pdfs/lambda/LambdaLPD.pdf>`_: this is not
   exactly the same model, but it really very close.
 
 
@@ -86,35 +86,35 @@
 
 First, a view of the noise at the output of the PSU; 0V, no load:
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint2.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint2.png
    :alt: Noise level of the LPD422FM - 0V/0A
       
 Same at 20V, no load:
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint3.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint3.png
    :alt: Noise level of the LPD422FM - 20V/0A
 
 And at maximum voltage (40V, no load):
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint4.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint4.png
    :alt: Noise level of the LPD422FM - 40V/0A
 
-Then, with the `ZPB30A1 electronic load <{filename}/ZPB30A1.rst>`
+Then, with the `ZPB30A1 electronic load <{static}/ZPB30A1.rst>`
 connected but not consuming any current (20V, 0A):
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint5.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint5.png
    :alt: Noise level of the LPD422FM connected to the ZPB30A1 - 20V/0A
 
 As you can see, there is a much higher injected by the electronic
 load. When measuring the visible pattern:
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint6.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint6.png
    :alt: Noise level of the LPD422FM connected to the ZPB30A1 - 20V/0A
 
 it's a 20ms pattern, ie. it's the mains 50Hz being injected... Let's
 turn the load on (20V, 0.5A):
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint7.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint7.png
    :alt: Noise level of the LPD422FM connected to the ZPB30A1 - 20V/0.5A
 
 The injected noise from the mains has vanished, and the RMS noise
@@ -122,7 +122,7 @@
 
 At 1 amp, it's roughly the same:
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint8.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint8.png
    :alt: Noise level of the LPD422FM connected to the ZPB30A1 - 20V/1A
 
 Now, trying to capture the transient curve when activating and
@@ -131,10 +131,10 @@
 easier. So I've just adjusted the trigger level to single capture the
 moment I press the 'on/off' button of the load:
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint10.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint10.png
    :alt: Transient response of the LPD422FM connected to the ZPB30A1 - 20V/1A -> 0A
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint11.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint11.png
    :alt: Transient response of the LPD422FM connected to the ZPB30A1 - 20V/0A -> 1A
 
 The overshoot is around 75mV and takes around 200ms to vanish, and the
@@ -142,7 +142,7 @@
 
 At one amp, the ripple voltage is around 8mVpp and 3mVrms:
 
-.. image:: {filename}/images/lambda/DS1Z_QuickPrint13.png
+.. image:: {static}/images/lambda/DS1Z_QuickPrint13.png
    :alt: Ripple voltage of the LPD422FM connected to the ZPB30A1 - 20V/1A
 
 It's quite out of spec: ripple should be less than 500µVrms and

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