Lambda power supply question

Discussion in 'General Electronics Chat' started by Robert Dorr, Apr 6, 2015.

  1. Robert Dorr

    Thread Starter New Member

    Apr 6, 2015
    9
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    I just acquired a Lambda LQ-532 power supply but I haven't received it yet. I was looking at the schematic for the LQ-530 series and see that all of the semiconductors are listed with proprietary numbers on the schematic. Does anyone here know if the actual semiconductors are marked with the proprietary numbers or are they stamped with standard industry numbers. For example the schematic list a transistor with the Lambda number "FBN-L199" I'm wondering if it is actually stamped with say a "2N3904", an industry standard designation, instead of the Lambda number?

    Thanks
     
  2. wayneh

    Expert

    Sep 9, 2010
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    3,054
    Last time I saw a schematic like that, there was also a key that went with it. The list of part numbers was translated into regular part numbers.
     
  3. Robert Dorr

    Thread Starter New Member

    Apr 6, 2015
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    The only schematic I have is one I found online and it had no such cross reference. I have done further searching and so far, no cross referencing.
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,137
    3,054
    If you search on that number you gave, you can find the specs for the part, for example here. Not easy but it's there.

    I think the parts actually installed on the board will have normal numbers, NOT the Lambda numbers. The PCB may be marked with those, however.
     
  5. Robert Dorr

    Thread Starter New Member

    Apr 6, 2015
    9
    1

    Thanks, that's what I really wanted to know. I have found cross reference information to some of the proprietary numbers that Lambda shows on their schematic but it would be so much better if the parts themselves are already marked with industry standard JEDEC numbers.
     
  6. Lundwall_Paul

    Member

    Oct 18, 2011
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  7. Robert Dorr

    Thread Starter New Member

    Apr 6, 2015
    9
    1
    Lundwall_Paul likes this.
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